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Finding the Fourth Proportional to 109,043.80, 163,565.70 and 67,053.40

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Solution

The fourth proportional to 109,043.80, 163,565.70 and 67,053.40 is: 100,580.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,043.80 : 163,565.70 = 67,053.40 : x
  2. Step 2: Convert to fraction form
    109,043.80/163,565.70 = 67,053.40/x
  3. Step 3: Cross multiply
    109,043.80x = 163,565.70 × 67,053.40
  4. Step 4: Simplify right side
    109,043.80x = 10,967,636,308.38
  5. Step 5: Solve for x
    x = 10,967,636,308.38/109,043.80
  6. Step 6: Final answer
    x = 100,580.10

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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.