Home / 121,282-181,701.34-87,919.32

Finding the Fourth Proportional to 121,282, 181,701.34 and 87,919.32

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Solution

The fourth proportional to 121,282, 181,701.34 and 87,919.32 is: 131,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,282 : 181,701.34 = 87,919.32 : x
  2. Step 2: Convert to fraction form
    121,282/181,701.34 = 87,919.32/x
  3. Step 3: Cross multiply
    121,282x = 181,701.34 × 87,919.32
  4. Step 4: Simplify right side
    121,282x = 15,975,058,255.89
  5. Step 5: Solve for x
    x = 15,975,058,255.89/121,282
  6. Step 6: Final answer
    x = 131,718.30

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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.