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Finding the Fourth Proportional to 118,135.93, 163,031.52 and 64,423.89

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Solution

The fourth proportional to 118,135.93, 163,031.52 and 64,423.89 is: 88,907.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,135.93 : 163,031.52 = 64,423.89 : x
  2. Step 2: Convert to fraction form
    118,135.93/163,031.52 = 64,423.89/x
  3. Step 3: Cross multiply
    118,135.93x = 163,031.52 × 64,423.89
  4. Step 4: Simplify right side
    118,135.93x = 10,503,123,895.86
  5. Step 5: Solve for x
    x = 10,503,123,895.86/118,135.93
  6. Step 6: Final answer
    x = 88,907.11

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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.