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Finding the Fourth Proportional to 83,125.80, 124,803.90 and 65,615.40

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Solution

The fourth proportional to 83,125.80, 124,803.90 and 65,615.40 is: 98,514.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,125.80 : 124,803.90 = 65,615.40 : x
  2. Step 2: Convert to fraction form
    83,125.80/124,803.90 = 65,615.40/x
  3. Step 3: Cross multiply
    83,125.80x = 124,803.90 × 65,615.40
  4. Step 4: Simplify right side
    83,125.80x = 8,189,057,820.06
  5. Step 5: Solve for x
    x = 8,189,057,820.06/83,125.80
  6. Step 6: Final answer
    x = 98,514.03

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1.5x scale

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.