Home / 109,123.20-163,789.20-56,570.40

Finding the Fourth Proportional to 109,123.20, 163,789.20 and 56,570.40

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Solution

The fourth proportional to 109,123.20, 163,789.20 and 56,570.40 is: 84,909.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,123.20 : 163,789.20 = 56,570.40 : x
  2. Step 2: Convert to fraction form
    109,123.20/163,789.20 = 56,570.40/x
  3. Step 3: Cross multiply
    109,123.20x = 163,789.20 × 56,570.40
  4. Step 4: Simplify right side
    109,123.20x = 9,265,620,559.68
  5. Step 5: Solve for x
    x = 9,265,620,559.68/109,123.20
  6. Step 6: Final answer
    x = 84,909.72

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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.