Home / 109,155.25-163,644.18-49,139.65

Finding the Fourth Proportional to 109,155.25, 163,644.18 and 49,139.65

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Solution

The fourth proportional to 109,155.25, 163,644.18 and 49,139.65 is: 73,669.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,155.25 : 163,644.18 = 49,139.65 : x
  2. Step 2: Convert to fraction form
    109,155.25/163,644.18 = 49,139.65/x
  3. Step 3: Cross multiply
    109,155.25x = 163,644.18 × 49,139.65
  4. Step 4: Simplify right side
    109,155.25x = 8,041,417,729.74
  5. Step 5: Solve for x
    x = 8,041,417,729.74/109,155.25
  6. Step 6: Final answer
    x = 73,669.55

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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.