Home / 113,140.80-156,141.36-62,839.68

Finding the Fourth Proportional to 113,140.80, 156,141.36 and 62,839.68

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Solution

The fourth proportional to 113,140.80, 156,141.36 and 62,839.68 is: 86,722.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,140.80 : 156,141.36 = 62,839.68 : x
  2. Step 2: Convert to fraction form
    113,140.80/156,141.36 = 62,839.68/x
  3. Step 3: Cross multiply
    113,140.80x = 156,141.36 × 62,839.68
  4. Step 4: Simplify right side
    113,140.80x = 9,811,873,097.16
  5. Step 5: Solve for x
    x = 9,811,873,097.16/113,140.80
  6. Step 6: Final answer
    x = 86,722.68

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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.