Home / 208,123,611,701.79-312,124,854,133.74-80,609,863,119.46

Finding the Fourth Proportional to 208,123,611,701.79, 312,124,854,133.74 and 80,609,863,119.46

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Solution

The fourth proportional to 208,123,611,701.79, 312,124,854,133.74 and 80,609,863,119.46 is: 120,891,337,422.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,123,611,701.79 : 312,124,854,133.74 = 80,609,863,119.46 : x
  2. Step 2: Convert to fraction form
    208,123,611,701.79/312,124,854,133.74 = 80,609,863,119.46/x
  3. Step 3: Cross multiply
    208,123,611,701.79x = 312,124,854,133.74 × 80,609,863,119.46
  4. Step 4: Simplify right side
    208,123,611,701.79x = 25,160,341,767,902,201,905,152
  5. Step 5: Solve for x
    x = 25,160,341,767,902,201,905,152/208,123,611,701.79
  6. Step 6: Final answer
    x = 120,891,337,422.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.