Home / 115,707.17-159,690.69-64,722.73

Finding the Fourth Proportional to 115,707.17, 159,690.69 and 64,722.73

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Solution

The fourth proportional to 115,707.17, 159,690.69 and 64,722.73 is: 89,325.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,707.17 : 159,690.69 = 64,722.73 : x
  2. Step 2: Convert to fraction form
    115,707.17/159,690.69 = 64,722.73/x
  3. Step 3: Cross multiply
    115,707.17x = 159,690.69 × 64,722.73
  4. Step 4: Simplify right side
    115,707.17x = 10,335,617,412.38
  5. Step 5: Solve for x
    x = 10,335,617,412.38/115,707.17
  6. Step 6: Final answer
    x = 89,325.64

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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.