Home / 100,207.32-138,308.79-62,474.28

Finding the Fourth Proportional to 100,207.32, 138,308.79 and 62,474.28

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Solution

The fourth proportional to 100,207.32, 138,308.79 and 62,474.28 is: 86,228.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,207.32 : 138,308.79 = 62,474.28 : x
  2. Step 2: Convert to fraction form
    100,207.32/138,308.79 = 62,474.28/x
  3. Step 3: Cross multiply
    100,207.32x = 138,308.79 × 62,474.28
  4. Step 4: Simplify right side
    100,207.32x = 8,640,742,072.92
  5. Step 5: Solve for x
    x = 8,640,742,072.92/100,207.32
  6. Step 6: Final answer
    x = 86,228.65

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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.