Home / 143,726.09-215,425.63-87,442.13

Finding the Fourth Proportional to 143,726.09, 215,425.63 and 87,442.13

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Solution

The fourth proportional to 143,726.09, 215,425.63 and 87,442.13 is: 131,063.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,726.09 : 215,425.63 = 87,442.13 : x
  2. Step 2: Convert to fraction form
    143,726.09/215,425.63 = 87,442.13/x
  3. Step 3: Cross multiply
    143,726.09x = 215,425.63 × 87,442.13
  4. Step 4: Simplify right side
    143,726.09x = 18,837,275,943.79
  5. Step 5: Solve for x
    x = 18,837,275,943.79/143,726.09
  6. Step 6: Final answer
    x = 131,063.72

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1.5x scale

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.