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Finding the Fourth Proportional to 138,984, 191,818.52 and 88,001.48

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Solution

The fourth proportional to 138,984, 191,818.52 and 88,001.48 is: 121,455.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,984 : 191,818.52 = 88,001.48 : x
  2. Step 2: Convert to fraction form
    138,984/191,818.52 = 88,001.48/x
  3. Step 3: Cross multiply
    138,984x = 191,818.52 × 88,001.48
  4. Step 4: Simplify right side
    138,984x = 16,880,312,252.31
  5. Step 5: Solve for x
    x = 16,880,312,252.31/138,984
  6. Step 6: Final answer
    x = 121,455.08

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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.