Home / 112,115.76-154,719.12-61,814.80

Finding the Fourth Proportional to 112,115.76, 154,719.12 and 61,814.80

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Solution

The fourth proportional to 112,115.76, 154,719.12 and 61,814.80 is: 85,304.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,115.76 : 154,719.12 = 61,814.80 : x
  2. Step 2: Convert to fraction form
    112,115.76/154,719.12 = 61,814.80/x
  3. Step 3: Cross multiply
    112,115.76x = 154,719.12 × 61,814.80
  4. Step 4: Simplify right side
    112,115.76x = 9,563,931,458.98
  5. Step 5: Solve for x
    x = 9,563,931,458.98/112,115.76
  6. Step 6: Final answer
    x = 85,304.08

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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.