Home / 103,614.08-142,974.64-65,359.18

Finding the Fourth Proportional to 103,614.08, 142,974.64 and 65,359.18

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Solution

The fourth proportional to 103,614.08, 142,974.64 and 65,359.18 is: 90,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,614.08 : 142,974.64 = 65,359.18 : x
  2. Step 2: Convert to fraction form
    103,614.08/142,974.64 = 65,359.18/x
  3. Step 3: Cross multiply
    103,614.08x = 142,974.64 × 65,359.18
  4. Step 4: Simplify right side
    103,614.08x = 9,344,704,710.36
  5. Step 5: Solve for x
    x = 9,344,704,710.36/103,614.08
  6. Step 6: Final answer
    x = 90,187.60

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1.5x scale

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.