Home / 75,118.18-112,515.29-70,701.82

Finding the Fourth Proportional to 75,118.18, 112,515.29 and 70,701.82

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Solution

The fourth proportional to 75,118.18, 112,515.29 and 70,701.82 is: 105,900.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,118.18 : 112,515.29 = 70,701.82 : x
  2. Step 2: Convert to fraction form
    75,118.18/112,515.29 = 70,701.82/x
  3. Step 3: Cross multiply
    75,118.18x = 112,515.29 × 70,701.82
  4. Step 4: Simplify right side
    75,118.18x = 7,955,035,780.83
  5. Step 5: Solve for x
    x = 7,955,035,780.83/75,118.18
  6. Step 6: Final answer
    x = 105,900.27

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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.