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Finding the Fourth Proportional to 124,640.73, 172,020.51 and 70,915.32

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Solution

The fourth proportional to 124,640.73, 172,020.51 and 70,915.32 is: 97,872.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,640.73 : 172,020.51 = 70,915.32 : x
  2. Step 2: Convert to fraction form
    124,640.73/172,020.51 = 70,915.32/x
  3. Step 3: Cross multiply
    124,640.73x = 172,020.51 × 70,915.32
  4. Step 4: Simplify right side
    124,640.73x = 12,198,889,513.21
  5. Step 5: Solve for x
    x = 12,198,889,513.21/124,640.73
  6. Step 6: Final answer
    x = 97,872.42

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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.