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Finding the Fourth Proportional to 172,545.64, 258,837.18 and 54,220.84

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Solution

The fourth proportional to 172,545.64, 258,837.18 and 54,220.84 is: 81,337.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,545.64 : 258,837.18 = 54,220.84 : x
  2. Step 2: Convert to fraction form
    172,545.64/258,837.18 = 54,220.84/x
  3. Step 3: Cross multiply
    172,545.64x = 258,837.18 × 54,220.84
  4. Step 4: Simplify right side
    172,545.64x = 14,034,369,322.83
  5. Step 5: Solve for x
    x = 14,034,369,322.83/172,545.64
  6. Step 6: Final answer
    x = 81,337.14

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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.