Home / 115,716.71-159,681.56-64,720.62

Finding the Fourth Proportional to 115,716.71, 159,681.56 and 64,720.62

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Solution

The fourth proportional to 115,716.71, 159,681.56 and 64,720.62 is: 89,310.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,716.71 : 159,681.56 = 64,720.62 : x
  2. Step 2: Convert to fraction form
    115,716.71/159,681.56 = 64,720.62/x
  3. Step 3: Cross multiply
    115,716.71x = 159,681.56 × 64,720.62
  4. Step 4: Simplify right side
    115,716.71x = 10,334,689,879.26
  5. Step 5: Solve for x
    x = 10,334,689,879.26/115,716.71
  6. Step 6: Final answer
    x = 89,310.26

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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.