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Finding the Fourth Proportional to 138,062.66, 207,094.53 and 42,000.98

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Solution

The fourth proportional to 138,062.66, 207,094.53 and 42,000.98 is: 63,001.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,062.66 : 207,094.53 = 42,000.98 : x
  2. Step 2: Convert to fraction form
    138,062.66/207,094.53 = 42,000.98/x
  3. Step 3: Cross multiply
    138,062.66x = 207,094.53 × 42,000.98
  4. Step 4: Simplify right side
    138,062.66x = 8,698,173,212.64
  5. Step 5: Solve for x
    x = 8,698,173,212.64/138,062.66
  6. Step 6: Final answer
    x = 63,001.63

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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.