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Finding the Fourth Proportional to 125,313.37, 172,916.47 and 71,601.87

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Solution

The fourth proportional to 125,313.37, 172,916.47 and 71,601.87 is: 98,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,313.37 : 172,916.47 = 71,601.87 : x
  2. Step 2: Convert to fraction form
    125,313.37/172,916.47 = 71,601.87/x
  3. Step 3: Cross multiply
    125,313.37x = 172,916.47 × 71,601.87
  4. Step 4: Simplify right side
    125,313.37x = 12,381,142,605.80
  5. Step 5: Solve for x
    x = 12,381,142,605.80/125,313.37
  6. Step 6: Final answer
    x = 98,801.45

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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.