Home / 135,304.92-186,758.28-78,727.20

Finding the Fourth Proportional to 135,304.92, 186,758.28 and 78,727.20

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Solution

The fourth proportional to 135,304.92, 186,758.28 and 78,727.20 is: 108,665.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,304.92 : 186,758.28 = 78,727.20 : x
  2. Step 2: Convert to fraction form
    135,304.92/186,758.28 = 78,727.20/x
  3. Step 3: Cross multiply
    135,304.92x = 186,758.28 × 78,727.20
  4. Step 4: Simplify right side
    135,304.92x = 14,702,956,461.22
  5. Step 5: Solve for x
    x = 14,702,956,461.22/135,304.92
  6. Step 6: Final answer
    x = 108,665.35

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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.