Home / 430,637.10-645,955.65-131,115.30

Finding the Fourth Proportional to 430,637.10, 645,955.65 and 131,115.30

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Solution

The fourth proportional to 430,637.10, 645,955.65 and 131,115.30 is: 196,672.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    430,637.10 : 645,955.65 = 131,115.30 : x
  2. Step 2: Convert to fraction form
    430,637.10/645,955.65 = 131,115.30/x
  3. Step 3: Cross multiply
    430,637.10x = 645,955.65 × 131,115.30
  4. Step 4: Simplify right side
    430,637.10x = 84,694,668,836.45
  5. Step 5: Solve for x
    x = 84,694,668,836.45/430,637.10
  6. Step 6: Final answer
    x = 196,672.95

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.