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Finding the Fourth Proportional to 153,679.01, 212,097.84 and 90,042.17

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Solution

The fourth proportional to 153,679.01, 212,097.84 and 90,042.17 is: 124,270.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,679.01 : 212,097.84 = 90,042.17 : x
  2. Step 2: Convert to fraction form
    153,679.01/212,097.84 = 90,042.17/x
  3. Step 3: Cross multiply
    153,679.01x = 212,097.84 × 90,042.17
  4. Step 4: Simplify right side
    153,679.01x = 19,097,749,765.91
  5. Step 5: Solve for x
    x = 19,097,749,765.91/153,679.01
  6. Step 6: Final answer
    x = 124,270.39

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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.