Home / 425,637.32-638,549.39-126,141.37

Finding the Fourth Proportional to 425,637.32, 638,549.39 and 126,141.37

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Solution

The fourth proportional to 425,637.32, 638,549.39 and 126,141.37 is: 189,239.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,637.32 : 638,549.39 = 126,141.37 : x
  2. Step 2: Convert to fraction form
    425,637.32/638,549.39 = 126,141.37/x
  3. Step 3: Cross multiply
    425,637.32x = 638,549.39 × 126,141.37
  4. Step 4: Simplify right side
    425,637.32x = 80,547,493,586.24
  5. Step 5: Solve for x
    x = 80,547,493,586.24/425,637.32
  6. Step 6: Final answer
    x = 189,239.74

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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.