Home / 131,387.90-181,315.28-70,958.54

Finding the Fourth Proportional to 131,387.90, 181,315.28 and 70,958.54

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Solution

The fourth proportional to 131,387.90, 181,315.28 and 70,958.54 is: 97,922.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,387.90 : 181,315.28 = 70,958.54 : x
  2. Step 2: Convert to fraction form
    131,387.90/181,315.28 = 70,958.54/x
  3. Step 3: Cross multiply
    131,387.90x = 181,315.28 × 70,958.54
  4. Step 4: Simplify right side
    131,387.90x = 12,865,867,548.49
  5. Step 5: Solve for x
    x = 12,865,867,548.49/131,387.90
  6. Step 6: Final answer
    x = 97,922.77

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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.