Home / 138,516.14-191,184.10-84,830.76

Finding the Fourth Proportional to 138,516.14, 191,184.10 and 84,830.76

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Solution

The fourth proportional to 138,516.14, 191,184.10 and 84,830.76 is: 117,085.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,516.14 : 191,184.10 = 84,830.76 : x
  2. Step 2: Convert to fraction form
    138,516.14/191,184.10 = 84,830.76/x
  3. Step 3: Cross multiply
    138,516.14x = 191,184.10 × 84,830.76
  4. Step 4: Simplify right side
    138,516.14x = 16,218,292,290.84
  5. Step 5: Solve for x
    x = 16,218,292,290.84/138,516.14
  6. Step 6: Final answer
    x = 117,085.94

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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.