Home / 129,444.48-178,622.01-72,079.47

Finding the Fourth Proportional to 129,444.48, 178,622.01 and 72,079.47

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Solution

The fourth proportional to 129,444.48, 178,622.01 and 72,079.47 is: 99,463.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,444.48 : 178,622.01 = 72,079.47 : x
  2. Step 2: Convert to fraction form
    129,444.48/178,622.01 = 72,079.47/x
  3. Step 3: Cross multiply
    129,444.48x = 178,622.01 × 72,079.47
  4. Step 4: Simplify right side
    129,444.48x = 12,874,979,811.13
  5. Step 5: Solve for x
    x = 12,874,979,811.13/129,444.48
  6. Step 6: Final answer
    x = 99,463.34

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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.