Home / 111,423.87-153,767.03-68,381.79

Finding the Fourth Proportional to 111,423.87, 153,767.03 and 68,381.79

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Solution

The fourth proportional to 111,423.87, 153,767.03 and 68,381.79 is: 94,368.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,423.87 : 153,767.03 = 68,381.79 : x
  2. Step 2: Convert to fraction form
    111,423.87/153,767.03 = 68,381.79/x
  3. Step 3: Cross multiply
    111,423.87x = 153,767.03 × 68,381.79
  4. Step 4: Simplify right side
    111,423.87x = 10,514,863,835.85
  5. Step 5: Solve for x
    x = 10,514,863,835.85/111,423.87
  6. Step 6: Final answer
    x = 94,368.14

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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.