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Finding the Fourth Proportional to 112,446, 155,177.10 and 62,145

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Solution

The fourth proportional to 112,446, 155,177.10 and 62,145 is: 85,761.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,446 : 155,177.10 = 62,145 : x
  2. Step 2: Convert to fraction form
    112,446/155,177.10 = 62,145/x
  3. Step 3: Cross multiply
    112,446x = 155,177.10 × 62,145
  4. Step 4: Simplify right side
    112,446x = 9,643,480,879.50
  5. Step 5: Solve for x
    x = 9,643,480,879.50/112,446
  6. Step 6: Final answer
    x = 85,761.00

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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.