Home / 129,322.53-178,463.93-72,732.69

Finding the Fourth Proportional to 129,322.53, 178,463.93 and 72,732.69

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Solution

The fourth proportional to 129,322.53, 178,463.93 and 72,732.69 is: 100,370.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,322.53 : 178,463.93 = 72,732.69 : x
  2. Step 2: Convert to fraction form
    129,322.53/178,463.93 = 72,732.69/x
  3. Step 3: Cross multiply
    129,322.53x = 178,463.93 × 72,732.69
  4. Step 4: Simplify right side
    129,322.53x = 12,980,161,333.21
  5. Step 5: Solve for x
    x = 12,980,161,333.21/129,322.53
  6. Step 6: Final answer
    x = 100,370.46

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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.