Home / 111,584.34-153,909.95-71,280.20

Finding the Fourth Proportional to 111,584.34, 153,909.95 and 71,280.20

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Solution

The fourth proportional to 111,584.34, 153,909.95 and 71,280.20 is: 98,317.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,584.34 : 153,909.95 = 71,280.20 : x
  2. Step 2: Convert to fraction form
    111,584.34/153,909.95 = 71,280.20/x
  3. Step 3: Cross multiply
    111,584.34x = 153,909.95 × 71,280.20
  4. Step 4: Simplify right side
    111,584.34x = 10,970,730,892.04
  5. Step 5: Solve for x
    x = 10,970,730,892.04/111,584.34
  6. Step 6: Final answer
    x = 98,317.84

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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.