Home / 143,598.42-215,475.39-138,362.58

Finding the Fourth Proportional to 143,598.42, 215,475.39 and 138,362.58

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Solution

The fourth proportional to 143,598.42, 215,475.39 and 138,362.58 is: 207,618.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,598.42 : 215,475.39 = 138,362.58 : x
  2. Step 2: Convert to fraction form
    143,598.42/215,475.39 = 138,362.58/x
  3. Step 3: Cross multiply
    143,598.42x = 215,475.39 × 138,362.58
  4. Step 4: Simplify right side
    143,598.42x = 29,813,730,886.91
  5. Step 5: Solve for x
    x = 29,813,730,886.91/143,598.42
  6. Step 6: Final answer
    x = 207,618.79

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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.