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Finding the Fourth Proportional to 101,888.58, 140,577.47 and 63,686.86

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Solution

The fourth proportional to 101,888.58, 140,577.47 and 63,686.86 is: 87,869.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,888.58 : 140,577.47 = 63,686.86 : x
  2. Step 2: Convert to fraction form
    101,888.58/140,577.47 = 63,686.86/x
  3. Step 3: Cross multiply
    101,888.58x = 140,577.47 × 63,686.86
  4. Step 4: Simplify right side
    101,888.58x = 8,952,937,578.23
  5. Step 5: Solve for x
    x = 8,952,937,578.23/101,888.58
  6. Step 6: Final answer
    x = 87,869.88

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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.