Home / 158,943.72-219,346.20-87,328.38

Finding the Fourth Proportional to 158,943.72, 219,346.20 and 87,328.38

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Solution

The fourth proportional to 158,943.72, 219,346.20 and 87,328.38 is: 120,515.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,943.72 : 219,346.20 = 87,328.38 : x
  2. Step 2: Convert to fraction form
    158,943.72/219,346.20 = 87,328.38/x
  3. Step 3: Cross multiply
    158,943.72x = 219,346.20 × 87,328.38
  4. Step 4: Simplify right side
    158,943.72x = 19,155,148,305.16
  5. Step 5: Solve for x
    x = 19,155,148,305.16/158,943.72
  6. Step 6: Final answer
    x = 120,515.29

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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.