Home / 129,386.24-178,551.56-72,025.28

Finding the Fourth Proportional to 129,386.24, 178,551.56 and 72,025.28

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Solution

The fourth proportional to 129,386.24, 178,551.56 and 72,025.28 is: 99,394.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,386.24 : 178,551.56 = 72,025.28 : x
  2. Step 2: Convert to fraction form
    129,386.24/178,551.56 = 72,025.28/x
  3. Step 3: Cross multiply
    129,386.24x = 178,551.56 × 72,025.28
  4. Step 4: Simplify right side
    129,386.24x = 12,860,226,103.44
  5. Step 5: Solve for x
    x = 12,860,226,103.44/129,386.24
  6. Step 6: Final answer
    x = 99,394.08

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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.