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Finding the Fourth Proportional to 113,889.80, 157,164.18 and 63,587.72

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Solution

The fourth proportional to 113,889.80, 157,164.18 and 63,587.72 is: 87,748.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,889.80 : 157,164.18 = 63,587.72 : x
  2. Step 2: Convert to fraction form
    113,889.80/157,164.18 = 63,587.72/x
  3. Step 3: Cross multiply
    113,889.80x = 157,164.18 × 63,587.72
  4. Step 4: Simplify right side
    113,889.80x = 9,993,711,871.87
  5. Step 5: Solve for x
    x = 9,993,711,871.87/113,889.80
  6. Step 6: Final answer
    x = 87,748.96

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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.