Home / 129,340.56-178,463.18-75,615.16

Finding the Fourth Proportional to 129,340.56, 178,463.18 and 75,615.16

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Solution

The fourth proportional to 129,340.56, 178,463.18 and 75,615.16 is: 104,333.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,340.56 : 178,463.18 = 75,615.16 : x
  2. Step 2: Convert to fraction form
    129,340.56/178,463.18 = 75,615.16/x
  3. Step 3: Cross multiply
    129,340.56x = 178,463.18 × 75,615.16
  4. Step 4: Simplify right side
    129,340.56x = 13,494,521,909.81
  5. Step 5: Solve for x
    x = 13,494,521,909.81/129,340.56
  6. Step 6: Final answer
    x = 104,333.26

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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.