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Finding the Fourth Proportional to 101,203.90, 151,805.85 and 71,655.10

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Solution

The fourth proportional to 101,203.90, 151,805.85 and 71,655.10 is: 107,482.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,203.90 : 151,805.85 = 71,655.10 : x
  2. Step 2: Convert to fraction form
    101,203.90/151,805.85 = 71,655.10/x
  3. Step 3: Cross multiply
    101,203.90x = 151,805.85 × 71,655.10
  4. Step 4: Simplify right side
    101,203.90x = 10,877,663,362.34
  5. Step 5: Solve for x
    x = 10,877,663,362.34/101,203.90
  6. Step 6: Final answer
    x = 107,482.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.