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Finding the Fourth Proportional to 169,393.88, 254,038.80 and 117,139.16

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Solution

The fourth proportional to 169,393.88, 254,038.80 and 117,139.16 is: 175,672.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,393.88 : 254,038.80 = 117,139.16 : x
  2. Step 2: Convert to fraction form
    169,393.88/254,038.80 = 117,139.16/x
  3. Step 3: Cross multiply
    169,393.88x = 254,038.80 × 117,139.16
  4. Step 4: Simplify right side
    169,393.88x = 29,757,891,639.41
  5. Step 5: Solve for x
    x = 29,757,891,639.41/169,393.88
  6. Step 6: Final answer
    x = 175,672.77

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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.