Home / 156,851.20-235,276.80-83,123.20

Finding the Fourth Proportional to 156,851.20, 235,276.80 and 83,123.20

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Solution

The fourth proportional to 156,851.20, 235,276.80 and 83,123.20 is: 124,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,851.20 : 235,276.80 = 83,123.20 : x
  2. Step 2: Convert to fraction form
    156,851.20/235,276.80 = 83,123.20/x
  3. Step 3: Cross multiply
    156,851.20x = 235,276.80 × 83,123.20
  4. Step 4: Simplify right side
    156,851.20x = 19,556,960,501.76
  5. Step 5: Solve for x
    x = 19,556,960,501.76/156,851.20
  6. Step 6: Final answer
    x = 124,684.80

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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.