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Finding the Fourth Proportional to 109,703.82, 151,397.19 and 61,959.18

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Solution

The fourth proportional to 109,703.82, 151,397.19 and 61,959.18 is: 85,507.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,703.82 : 151,397.19 = 61,959.18 : x
  2. Step 2: Convert to fraction form
    109,703.82/151,397.19 = 61,959.18/x
  3. Step 3: Cross multiply
    109,703.82x = 151,397.19 × 61,959.18
  4. Step 4: Simplify right side
    109,703.82x = 9,380,445,746.70
  5. Step 5: Solve for x
    x = 9,380,445,746.70/109,703.82
  6. Step 6: Final answer
    x = 85,507.01

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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.