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Finding the Fourth Proportional to 147,058.47, 202,941.86 and 79,990.47

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Solution

The fourth proportional to 147,058.47, 202,941.86 and 79,990.47 is: 110,387.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,058.47 : 202,941.86 = 79,990.47 : x
  2. Step 2: Convert to fraction form
    147,058.47/202,941.86 = 79,990.47/x
  3. Step 3: Cross multiply
    147,058.47x = 202,941.86 × 79,990.47
  4. Step 4: Simplify right side
    147,058.47x = 16,233,414,364.12
  5. Step 5: Solve for x
    x = 16,233,414,364.12/147,058.47
  6. Step 6: Final answer
    x = 110,387.48

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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.