Home / 131,441.76-181,389.51-71,825.76

Finding the Fourth Proportional to 131,441.76, 181,389.51 and 71,825.76

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Solution

The fourth proportional to 131,441.76, 181,389.51 and 71,825.76 is: 99,119.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,441.76 : 181,389.51 = 71,825.76 : x
  2. Step 2: Convert to fraction form
    131,441.76/181,389.51 = 71,825.76/x
  3. Step 3: Cross multiply
    131,441.76x = 181,389.51 × 71,825.76
  4. Step 4: Simplify right side
    131,441.76x = 13,028,439,411.78
  5. Step 5: Solve for x
    x = 13,028,439,411.78/131,441.76
  6. Step 6: Final answer
    x = 99,119.48

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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.