Home / 130,390,902.60-179,900,205.12-78,160,881.12

Finding the Fourth Proportional to 130,390,902.60, 179,900,205.12 and 78,160,881.12

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Solution

The fourth proportional to 130,390,902.60, 179,900,205.12 and 78,160,881.12 is: 107,838,493.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,390,902.60 : 179,900,205.12 = 78,160,881.12 : x
  2. Step 2: Convert to fraction form
    130,390,902.60/179,900,205.12 = 78,160,881.12/x
  3. Step 3: Cross multiply
    130,390,902.60x = 179,900,205.12 × 78,160,881.12
  4. Step 4: Simplify right side
    130,390,902.60x = 14,061,158,545,847,936
  5. Step 5: Solve for x
    x = 14,061,158,545,847,936/130,390,902.60
  6. Step 6: Final answer
    x = 107,838,493.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.