Home / 143,609.84-215,411.68-38,428.80

Finding the Fourth Proportional to 143,609.84, 215,411.68 and 38,428.80

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Solution

The fourth proportional to 143,609.84, 215,411.68 and 38,428.80 is: 57,642.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,609.84 : 215,411.68 = 38,428.80 : x
  2. Step 2: Convert to fraction form
    143,609.84/215,411.68 = 38,428.80/x
  3. Step 3: Cross multiply
    143,609.84x = 215,411.68 × 38,428.80
  4. Step 4: Simplify right side
    143,609.84x = 8,278,012,368.38
  5. Step 5: Solve for x
    x = 8,278,012,368.38/143,609.84
  6. Step 6: Final answer
    x = 57,642.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.