Home / 143,487.32-215,123.85-98,987.13

Finding the Fourth Proportional to 143,487.32, 215,123.85 and 98,987.13

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Solution

The fourth proportional to 143,487.32, 215,123.85 and 98,987.13 is: 148,406.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,487.32 : 215,123.85 = 98,987.13 : x
  2. Step 2: Convert to fraction form
    143,487.32/215,123.85 = 98,987.13/x
  3. Step 3: Cross multiply
    143,487.32x = 215,123.85 × 98,987.13
  4. Step 4: Simplify right side
    143,487.32x = 21,294,492,506.05
  5. Step 5: Solve for x
    x = 21,294,492,506.05/143,487.32
  6. Step 6: Final answer
    x = 148,406.79

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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.