Home / 155,042.28-213,957.54-87,060.24

Finding the Fourth Proportional to 155,042.28, 213,957.54 and 87,060.24

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Solution

The fourth proportional to 155,042.28, 213,957.54 and 87,060.24 is: 120,142.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,042.28 : 213,957.54 = 87,060.24 : x
  2. Step 2: Convert to fraction form
    155,042.28/213,957.54 = 87,060.24/x
  3. Step 3: Cross multiply
    155,042.28x = 213,957.54 × 87,060.24
  4. Step 4: Simplify right side
    155,042.28x = 18,627,194,782.21
  5. Step 5: Solve for x
    x = 18,627,194,782.21/155,042.28
  6. Step 6: Final answer
    x = 120,142.68

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1.5x scale

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.