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Finding the Fourth Proportional to 100,693.54, 151,038.96 and 40,721.14

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Solution

The fourth proportional to 100,693.54, 151,038.96 and 40,721.14 is: 61,081.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,693.54 : 151,038.96 = 40,721.14 : x
  2. Step 2: Convert to fraction form
    100,693.54/151,038.96 = 40,721.14/x
  3. Step 3: Cross multiply
    100,693.54x = 151,038.96 × 40,721.14
  4. Step 4: Simplify right side
    100,693.54x = 6,150,478,635.61
  5. Step 5: Solve for x
    x = 6,150,478,635.61/100,693.54
  6. Step 6: Final answer
    x = 61,081.16

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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.