Home / 156,779.92-216,356.70-85,159.36

Finding the Fourth Proportional to 156,779.92, 216,356.70 and 85,159.36

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Solution

The fourth proportional to 156,779.92, 216,356.70 and 85,159.36 is: 117,520.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,779.92 : 216,356.70 = 85,159.36 : x
  2. Step 2: Convert to fraction form
    156,779.92/216,356.70 = 85,159.36/x
  3. Step 3: Cross multiply
    156,779.92x = 216,356.70 × 85,159.36
  4. Step 4: Simplify right side
    156,779.92x = 18,424,798,103.71
  5. Step 5: Solve for x
    x = 18,424,798,103.71/156,779.92
  6. Step 6: Final answer
    x = 117,520.14

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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.