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Finding the Fourth Proportional to 203,159.80, 280,373.16 and 112,511.08

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Solution

The fourth proportional to 203,159.80, 280,373.16 and 112,511.08 is: 155,272.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,159.80 : 280,373.16 = 112,511.08 : x
  2. Step 2: Convert to fraction form
    203,159.80/280,373.16 = 112,511.08/x
  3. Step 3: Cross multiply
    203,159.80x = 280,373.16 × 112,511.08
  4. Step 4: Simplify right side
    203,159.80x = 31,545,087,034.61
  5. Step 5: Solve for x
    x = 31,545,087,034.61/203,159.80
  6. Step 6: Final answer
    x = 155,272.29

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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.