Home / 100,475.16-138,670.14-60,190.62

Finding the Fourth Proportional to 100,475.16, 138,670.14 and 60,190.62

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Solution

The fourth proportional to 100,475.16, 138,670.14 and 60,190.62 is: 83,071.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,475.16 : 138,670.14 = 60,190.62 : x
  2. Step 2: Convert to fraction form
    100,475.16/138,670.14 = 60,190.62/x
  3. Step 3: Cross multiply
    100,475.16x = 138,670.14 × 60,190.62
  4. Step 4: Simplify right side
    100,475.16x = 8,346,641,702.09
  5. Step 5: Solve for x
    x = 8,346,641,702.09/100,475.16
  6. Step 6: Final answer
    x = 83,071.69

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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.