Home / 111,064.03-153,108.94-79,177.57

Finding the Fourth Proportional to 111,064.03, 153,108.94 and 79,177.57

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Solution

The fourth proportional to 111,064.03, 153,108.94 and 79,177.57 is: 109,151.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,064.03 : 153,108.94 = 79,177.57 : x
  2. Step 2: Convert to fraction form
    111,064.03/153,108.94 = 79,177.57/x
  3. Step 3: Cross multiply
    111,064.03x = 153,108.94 × 79,177.57
  4. Step 4: Simplify right side
    111,064.03x = 12,122,793,814.48
  5. Step 5: Solve for x
    x = 12,122,793,814.48/111,064.03
  6. Step 6: Final answer
    x = 109,151.40

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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.