Home / 189,627.60-261,686.98-103,587.76

Finding the Fourth Proportional to 189,627.60, 261,686.98 and 103,587.76

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Solution

The fourth proportional to 189,627.60, 261,686.98 and 103,587.76 is: 142,951.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,627.60 : 261,686.98 = 103,587.76 : x
  2. Step 2: Convert to fraction form
    189,627.60/261,686.98 = 103,587.76/x
  3. Step 3: Cross multiply
    189,627.60x = 261,686.98 × 103,587.76
  4. Step 4: Simplify right side
    189,627.60x = 27,107,568,079.36
  5. Step 5: Solve for x
    x = 27,107,568,079.36/189,627.60
  6. Step 6: Final answer
    x = 142,951.60

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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.