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Finding the Fourth Proportional to 117,853.47, 162,654.54 and 66,878.76

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Solution

The fourth proportional to 117,853.47, 162,654.54 and 66,878.76 is: 92,302.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,853.47 : 162,654.54 = 66,878.76 : x
  2. Step 2: Convert to fraction form
    117,853.47/162,654.54 = 66,878.76/x
  3. Step 3: Cross multiply
    117,853.47x = 162,654.54 × 66,878.76
  4. Step 4: Simplify right side
    117,853.47x = 10,878,133,943.57
  5. Step 5: Solve for x
    x = 10,878,133,943.57/117,853.47
  6. Step 6: Final answer
    x = 92,302.19

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1.5x scale

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.