Home / 156,742.38-235,124.73-77,777.10

Finding the Fourth Proportional to 156,742.38, 235,124.73 and 77,777.10

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Solution

The fourth proportional to 156,742.38, 235,124.73 and 77,777.10 is: 116,671.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,742.38 : 235,124.73 = 77,777.10 : x
  2. Step 2: Convert to fraction form
    156,742.38/235,124.73 = 77,777.10/x
  3. Step 3: Cross multiply
    156,742.38x = 235,124.73 × 77,777.10
  4. Step 4: Simplify right side
    156,742.38x = 18,287,319,637.68
  5. Step 5: Solve for x
    x = 18,287,319,637.68/156,742.38
  6. Step 6: Final answer
    x = 116,671.19

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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.