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Finding the Fourth Proportional to 113,868.71, 157,138.80 and 63,567.71

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Solution

The fourth proportional to 113,868.71, 157,138.80 and 63,567.71 is: 87,723.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,868.71 : 157,138.80 = 63,567.71 : x
  2. Step 2: Convert to fraction form
    113,868.71/157,138.80 = 63,567.71/x
  3. Step 3: Cross multiply
    113,868.71x = 157,138.80 × 63,567.71
  4. Step 4: Simplify right side
    113,868.71x = 9,988,953,668.15
  5. Step 5: Solve for x
    x = 9,988,953,668.15/113,868.71
  6. Step 6: Final answer
    x = 87,723.43

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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.