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Finding the Fourth Proportional to 111,425.76, 153,663.12 and 88,839.84

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Solution

The fourth proportional to 111,425.76, 153,663.12 and 88,839.84 is: 122,515.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,425.76 : 153,663.12 = 88,839.84 : x
  2. Step 2: Convert to fraction form
    111,425.76/153,663.12 = 88,839.84/x
  3. Step 3: Cross multiply
    111,425.76x = 153,663.12 × 88,839.84
  4. Step 4: Simplify right side
    111,425.76x = 13,651,406,994.70
  5. Step 5: Solve for x
    x = 13,651,406,994.70/111,425.76
  6. Step 6: Final answer
    x = 122,515.72

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1.5x scale

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.