Home / 102,685.41-153,962.19-42,755.40

Finding the Fourth Proportional to 102,685.41, 153,962.19 and 42,755.40

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Solution

The fourth proportional to 102,685.41, 153,962.19 and 42,755.40 is: 64,105.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,685.41 : 153,962.19 = 42,755.40 : x
  2. Step 2: Convert to fraction form
    102,685.41/153,962.19 = 42,755.40/x
  3. Step 3: Cross multiply
    102,685.41x = 153,962.19 × 42,755.40
  4. Step 4: Simplify right side
    102,685.41x = 6,582,715,018.33
  5. Step 5: Solve for x
    x = 6,582,715,018.33/102,685.41
  6. Step 6: Final answer
    x = 64,105.65

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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.