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Finding the Fourth Proportional to 102,878.66, 141,976.60 and 60,436.82

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Solution

The fourth proportional to 102,878.66, 141,976.60 and 60,436.82 is: 83,405.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,878.66 : 141,976.60 = 60,436.82 : x
  2. Step 2: Convert to fraction form
    102,878.66/141,976.60 = 60,436.82/x
  3. Step 3: Cross multiply
    102,878.66x = 141,976.60 × 60,436.82
  4. Step 4: Simplify right side
    102,878.66x = 8,580,614,218.41
  5. Step 5: Solve for x
    x = 8,580,614,218.41/102,878.66
  6. Step 6: Final answer
    x = 83,405.19

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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.