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Finding the Fourth Proportional to 109,703.64, 151,387.98 and 64,991.64

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Solution

The fourth proportional to 109,703.64, 151,387.98 and 64,991.64 is: 89,686.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,703.64 : 151,387.98 = 64,991.64 : x
  2. Step 2: Convert to fraction form
    109,703.64/151,387.98 = 64,991.64/x
  3. Step 3: Cross multiply
    109,703.64x = 151,387.98 × 64,991.64
  4. Step 4: Simplify right side
    109,703.64x = 9,838,953,096.49
  5. Step 5: Solve for x
    x = 9,838,953,096.49/109,703.64
  6. Step 6: Final answer
    x = 89,686.66

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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.