Home / 142,008.30-212,904.45-71,937.90

Finding the Fourth Proportional to 142,008.30, 212,904.45 and 71,937.90

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Solution

The fourth proportional to 142,008.30, 212,904.45 and 71,937.90 is: 107,852.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,008.30 : 212,904.45 = 71,937.90 : x
  2. Step 2: Convert to fraction form
    142,008.30/212,904.45 = 71,937.90/x
  3. Step 3: Cross multiply
    142,008.30x = 212,904.45 × 71,937.90
  4. Step 4: Simplify right side
    142,008.30x = 15,315,899,033.66
  5. Step 5: Solve for x
    x = 15,315,899,033.66/142,008.30
  6. Step 6: Final answer
    x = 107,852.14

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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.