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Finding the Fourth Proportional to 172,437.64, 258,653.46 and 77,600.71

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Solution

The fourth proportional to 172,437.64, 258,653.46 and 77,600.71 is: 116,399.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,437.64 : 258,653.46 = 77,600.71 : x
  2. Step 2: Convert to fraction form
    172,437.64/258,653.46 = 77,600.71/x
  3. Step 3: Cross multiply
    172,437.64x = 258,653.46 × 77,600.71
  4. Step 4: Simplify right side
    172,437.64x = 20,071,691,493.32
  5. Step 5: Solve for x
    x = 20,071,691,493.32/172,437.64
  6. Step 6: Final answer
    x = 116,399.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.