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Finding the Fourth Proportional to 129,608.52, 178,858.98 and 73,038.12

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Solution

The fourth proportional to 129,608.52, 178,858.98 and 73,038.12 is: 100,792.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,608.52 : 178,858.98 = 73,038.12 : x
  2. Step 2: Convert to fraction form
    129,608.52/178,858.98 = 73,038.12/x
  3. Step 3: Cross multiply
    129,608.52x = 178,858.98 × 73,038.12
  4. Step 4: Simplify right side
    129,608.52x = 13,063,523,644.32
  5. Step 5: Solve for x
    x = 13,063,523,644.32/129,608.52
  6. Step 6: Final answer
    x = 100,792.17

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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.