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Finding the Fourth Proportional to 99,254.97, 136,932.93 and 56,790.72

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Solution

The fourth proportional to 99,254.97, 136,932.93 and 56,790.72 is: 78,348.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,254.97 : 136,932.93 = 56,790.72 : x
  2. Step 2: Convert to fraction form
    99,254.97/136,932.93 = 56,790.72/x
  3. Step 3: Cross multiply
    99,254.97x = 136,932.93 × 56,790.72
  4. Step 4: Simplify right side
    99,254.97x = 7,776,519,686.41
  5. Step 5: Solve for x
    x = 7,776,519,686.41/99,254.97
  6. Step 6: Final answer
    x = 78,348.92

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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.