Home / 154,286.42-212,934.95-86,307.17

Finding the Fourth Proportional to 154,286.42, 212,934.95 and 86,307.17

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Solution

The fourth proportional to 154,286.42, 212,934.95 and 86,307.17 is: 119,114.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,286.42 : 212,934.95 = 86,307.17 : x
  2. Step 2: Convert to fraction form
    154,286.42/212,934.95 = 86,307.17/x
  3. Step 3: Cross multiply
    154,286.42x = 212,934.95 × 86,307.17
  4. Step 4: Simplify right side
    154,286.42x = 18,377,811,432.38
  5. Step 5: Solve for x
    x = 18,377,811,432.38/154,286.42
  6. Step 6: Final answer
    x = 119,114.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.