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Finding the Fourth Proportional to 153,449.64, 211,761.14 and 89,775.14

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Solution

The fourth proportional to 153,449.64, 211,761.14 and 89,775.14 is: 123,890.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,449.64 : 211,761.14 = 89,775.14 : x
  2. Step 2: Convert to fraction form
    153,449.64/211,761.14 = 89,775.14/x
  3. Step 3: Cross multiply
    153,449.64x = 211,761.14 × 89,775.14
  4. Step 4: Simplify right side
    153,449.64x = 19,010,884,482.38
  5. Step 5: Solve for x
    x = 19,010,884,482.38/153,449.64
  6. Step 6: Final answer
    x = 123,890.06

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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.