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Finding the Fourth Proportional to 83,085.44, 124,029.70 and 77,180.60

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Solution

The fourth proportional to 83,085.44, 124,029.70 and 77,180.60 is: 115,214.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,085.44 : 124,029.70 = 77,180.60 : x
  2. Step 2: Convert to fraction form
    83,085.44/124,029.70 = 77,180.60/x
  3. Step 3: Cross multiply
    83,085.44x = 124,029.70 × 77,180.60
  4. Step 4: Simplify right side
    83,085.44x = 9,572,686,663.82
  5. Step 5: Solve for x
    x = 9,572,686,663.82/83,085.44
  6. Step 6: Final answer
    x = 115,214.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.