Home / 112,678.14-155,494.50-61,690.26

Finding the Fourth Proportional to 112,678.14, 155,494.50 and 61,690.26

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Solution

The fourth proportional to 112,678.14, 155,494.50 and 61,690.26 is: 85,131.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,678.14 : 155,494.50 = 61,690.26 : x
  2. Step 2: Convert to fraction form
    112,678.14/155,494.50 = 61,690.26/x
  3. Step 3: Cross multiply
    112,678.14x = 155,494.50 × 61,690.26
  4. Step 4: Simplify right side
    112,678.14x = 9,592,496,133.57
  5. Step 5: Solve for x
    x = 9,592,496,133.57/112,678.14
  6. Step 6: Final answer
    x = 85,131.83

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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.