Home / 113,178.39-156,177.03-65,434.81

Finding the Fourth Proportional to 113,178.39, 156,177.03 and 65,434.81

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Solution

The fourth proportional to 113,178.39, 156,177.03 and 65,434.81 is: 90,294.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,178.39 : 156,177.03 = 65,434.81 : x
  2. Step 2: Convert to fraction form
    113,178.39/156,177.03 = 65,434.81/x
  3. Step 3: Cross multiply
    113,178.39x = 156,177.03 × 65,434.81
  4. Step 4: Simplify right side
    113,178.39x = 10,219,414,838.44
  5. Step 5: Solve for x
    x = 10,219,414,838.44/113,178.39
  6. Step 6: Final answer
    x = 90,294.76

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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.