Home / 129,099.19-178,153.32-71,737.03

Finding the Fourth Proportional to 129,099.19, 178,153.32 and 71,737.03

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Solution

The fourth proportional to 129,099.19, 178,153.32 and 71,737.03 is: 98,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,099.19 : 178,153.32 = 71,737.03 : x
  2. Step 2: Convert to fraction form
    129,099.19/178,153.32 = 71,737.03/x
  3. Step 3: Cross multiply
    129,099.19x = 178,153.32 × 71,737.03
  4. Step 4: Simplify right side
    129,099.19x = 12,780,190,061.44
  5. Step 5: Solve for x
    x = 12,780,190,061.44/129,099.19
  6. Step 6: Final answer
    x = 98,995.12

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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.