Home / 129,534.40-178,753.98-72,944.56

Finding the Fourth Proportional to 129,534.40, 178,753.98 and 72,944.56

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Solution

The fourth proportional to 129,534.40, 178,753.98 and 72,944.56 is: 100,661.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,534.40 : 178,753.98 = 72,944.56 : x
  2. Step 2: Convert to fraction form
    129,534.40/178,753.98 = 72,944.56/x
  3. Step 3: Cross multiply
    129,534.40x = 178,753.98 × 72,944.56
  4. Step 4: Simplify right side
    129,534.40x = 13,039,130,419.35
  5. Step 5: Solve for x
    x = 13,039,130,419.35/129,534.40
  6. Step 6: Final answer
    x = 100,661.53

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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.