Home / 104,849.28-144,720-64,569.60

Finding the Fourth Proportional to 104,849.28, 144,720 and 64,569.60

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Solution

The fourth proportional to 104,849.28, 144,720 and 64,569.60 is: 89,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,849.28 : 144,720 = 64,569.60 : x
  2. Step 2: Convert to fraction form
    104,849.28/144,720 = 64,569.60/x
  3. Step 3: Cross multiply
    104,849.28x = 144,720 × 64,569.60
  4. Step 4: Simplify right side
    104,849.28x = 9,344,512,512
  5. Step 5: Solve for x
    x = 9,344,512,512/104,849.28
  6. Step 6: Final answer
    x = 89,123.29

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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.