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Finding the Fourth Proportional to 138,851.80, 208,156.20 and 94,334.20

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Solution

The fourth proportional to 138,851.80, 208,156.20 and 94,334.20 is: 141,418.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,851.80 : 208,156.20 = 94,334.20 : x
  2. Step 2: Convert to fraction form
    138,851.80/208,156.20 = 94,334.20/x
  3. Step 3: Cross multiply
    138,851.80x = 208,156.20 × 94,334.20
  4. Step 4: Simplify right side
    138,851.80x = 19,636,248,602.04
  5. Step 5: Solve for x
    x = 19,636,248,602.04/138,851.80
  6. Step 6: Final answer
    x = 141,418.75

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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.