Home / 106,986.16-147,645.96-64,543.78

Finding the Fourth Proportional to 106,986.16, 147,645.96 and 64,543.78

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Solution

The fourth proportional to 106,986.16, 147,645.96 and 64,543.78 is: 89,073.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,986.16 : 147,645.96 = 64,543.78 : x
  2. Step 2: Convert to fraction form
    106,986.16/147,645.96 = 64,543.78/x
  3. Step 3: Cross multiply
    106,986.16x = 147,645.96 × 64,543.78
  4. Step 4: Simplify right side
    106,986.16x = 9,529,628,360.13
  5. Step 5: Solve for x
    x = 9,529,628,360.13/106,986.16
  6. Step 6: Final answer
    x = 89,073.47

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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.