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Finding the Fourth Proportional to 114,985.80, 158,680.17 and 64,684.80

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Solution

The fourth proportional to 114,985.80, 158,680.17 and 64,684.80 is: 89,264.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,985.80 : 158,680.17 = 64,684.80 : x
  2. Step 2: Convert to fraction form
    114,985.80/158,680.17 = 64,684.80/x
  3. Step 3: Cross multiply
    114,985.80x = 158,680.17 × 64,684.80
  4. Step 4: Simplify right side
    114,985.80x = 10,264,195,060.42
  5. Step 5: Solve for x
    x = 10,264,195,060.42/114,985.80
  6. Step 6: Final answer
    x = 89,264.89

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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.