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Finding the Fourth Proportional to 109,417.60, 164,126.40 and 54,006.40

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Solution

The fourth proportional to 109,417.60, 164,126.40 and 54,006.40 is: 81,009.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,417.60 : 164,126.40 = 54,006.40 : x
  2. Step 2: Convert to fraction form
    109,417.60/164,126.40 = 54,006.40/x
  3. Step 3: Cross multiply
    109,417.60x = 164,126.40 × 54,006.40
  4. Step 4: Simplify right side
    109,417.60x = 8,863,876,008.96
  5. Step 5: Solve for x
    x = 8,863,876,008.96/109,417.60
  6. Step 6: Final answer
    x = 81,009.60

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1.5x scale

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.