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Finding the Fourth Proportional to 112,751.66, 155,472.61 and 71,851.00

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Solution

The fourth proportional to 112,751.66, 155,472.61 and 71,851.00 is: 99,074.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,751.66 : 155,472.61 = 71,851.00 : x
  2. Step 2: Convert to fraction form
    112,751.66/155,472.61 = 71,851.00/x
  3. Step 3: Cross multiply
    112,751.66x = 155,472.61 × 71,851.00
  4. Step 4: Simplify right side
    112,751.66x = 11,170,862,220.32
  5. Step 5: Solve for x
    x = 11,170,862,220.32/112,751.66
  6. Step 6: Final answer
    x = 99,074.92

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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.