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Finding the Fourth Proportional to 83,010.80, 124,343.40 and 83,010.80

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Solution

The fourth proportional to 83,010.80, 124,343.40 and 83,010.80 is: 124,343.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,010.80 : 124,343.40 = 83,010.80 : x
  2. Step 2: Convert to fraction form
    83,010.80/124,343.40 = 83,010.80/x
  3. Step 3: Cross multiply
    83,010.80x = 124,343.40 × 83,010.80
  4. Step 4: Simplify right side
    83,010.80x = 10,321,845,108.72
  5. Step 5: Solve for x
    x = 10,321,845,108.72/83,010.80
  6. Step 6: Final answer
    x = 124,343.40

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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.