Home / 156,564.90-234,634.86-72,139.14

Finding the Fourth Proportional to 156,564.90, 234,634.86 and 72,139.14

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Solution

The fourth proportional to 156,564.90, 234,634.86 and 72,139.14 is: 108,110.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,564.90 : 234,634.86 = 72,139.14 : x
  2. Step 2: Convert to fraction form
    156,564.90/234,634.86 = 72,139.14/x
  3. Step 3: Cross multiply
    156,564.90x = 234,634.86 × 72,139.14
  4. Step 4: Simplify right side
    156,564.90x = 16,926,357,014.42
  5. Step 5: Solve for x
    x = 16,926,357,014.42/156,564.90
  6. Step 6: Final answer
    x = 108,110.80

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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.