Home / 156,041.20-234,061.80-77,309.20

Finding the Fourth Proportional to 156,041.20, 234,061.80 and 77,309.20

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Solution

The fourth proportional to 156,041.20, 234,061.80 and 77,309.20 is: 115,963.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,041.20 : 234,061.80 = 77,309.20 : x
  2. Step 2: Convert to fraction form
    156,041.20/234,061.80 = 77,309.20/x
  3. Step 3: Cross multiply
    156,041.20x = 234,061.80 × 77,309.20
  4. Step 4: Simplify right side
    156,041.20x = 18,095,130,508.56
  5. Step 5: Solve for x
    x = 18,095,130,508.56/156,041.20
  6. Step 6: Final answer
    x = 115,963.80

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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.