Home / 112,178.15-154,808.76-61,191.74

Finding the Fourth Proportional to 112,178.15, 154,808.76 and 61,191.74

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Solution

The fourth proportional to 112,178.15, 154,808.76 and 61,191.74 is: 84,446.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,178.15 : 154,808.76 = 61,191.74 : x
  2. Step 2: Convert to fraction form
    112,178.15/154,808.76 = 61,191.74/x
  3. Step 3: Cross multiply
    112,178.15x = 154,808.76 × 61,191.74
  4. Step 4: Simplify right side
    112,178.15x = 9,473,016,617.60
  5. Step 5: Solve for x
    x = 9,473,016,617.60/112,178.15
  6. Step 6: Final answer
    x = 84,446.19

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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.