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Finding the Fourth Proportional to 170,732.80, 256,317.90 and 90,834.40

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Solution

The fourth proportional to 170,732.80, 256,317.90 and 90,834.40 is: 136,367.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,732.80 : 256,317.90 = 90,834.40 : x
  2. Step 2: Convert to fraction form
    170,732.80/256,317.90 = 90,834.40/x
  3. Step 3: Cross multiply
    170,732.80x = 256,317.90 × 90,834.40
  4. Step 4: Simplify right side
    170,732.80x = 23,282,482,655.76
  5. Step 5: Solve for x
    x = 23,282,482,655.76/170,732.80
  6. Step 6: Final answer
    x = 136,367.95

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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.