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Finding the Fourth Proportional to 147,987.72, 204,062.40 and 94,203.90

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Solution

The fourth proportional to 147,987.72, 204,062.40 and 94,203.90 is: 129,899.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,987.72 : 204,062.40 = 94,203.90 : x
  2. Step 2: Convert to fraction form
    147,987.72/204,062.40 = 94,203.90/x
  3. Step 3: Cross multiply
    147,987.72x = 204,062.40 × 94,203.90
  4. Step 4: Simplify right side
    147,987.72x = 19,223,473,923.36
  5. Step 5: Solve for x
    x = 19,223,473,923.36/147,987.72
  6. Step 6: Final answer
    x = 129,899.12

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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.