Home / 100,156.28-138,193.56-59,300.12

Finding the Fourth Proportional to 100,156.28, 138,193.56 and 59,300.12

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Solution

The fourth proportional to 100,156.28, 138,193.56 and 59,300.12 is: 81,821.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,156.28 : 138,193.56 = 59,300.12 : x
  2. Step 2: Convert to fraction form
    100,156.28/138,193.56 = 59,300.12/x
  3. Step 3: Cross multiply
    100,156.28x = 138,193.56 × 59,300.12
  4. Step 4: Simplify right side
    100,156.28x = 8,194,894,691.23
  5. Step 5: Solve for x
    x = 8,194,894,691.23/100,156.28
  6. Step 6: Final answer
    x = 81,821.08

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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.