Home / 115,979.68-160,129.07-89,074.11

Finding the Fourth Proportional to 115,979.68, 160,129.07 and 89,074.11

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Solution

The fourth proportional to 115,979.68, 160,129.07 and 89,074.11 is: 122,981.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,979.68 : 160,129.07 = 89,074.11 : x
  2. Step 2: Convert to fraction form
    115,979.68/160,129.07 = 89,074.11/x
  3. Step 3: Cross multiply
    115,979.68x = 160,129.07 × 89,074.11
  4. Step 4: Simplify right side
    115,979.68x = 14,263,354,884.52
  5. Step 5: Solve for x
    x = 14,263,354,884.52/115,979.68
  6. Step 6: Final answer
    x = 122,981.50

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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.