Home / 138,631.60-207,947.40-124,116.40

Finding the Fourth Proportional to 138,631.60, 207,947.40 and 124,116.40

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Solution

The fourth proportional to 138,631.60, 207,947.40 and 124,116.40 is: 186,174.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,631.60 : 207,947.40 = 124,116.40 : x
  2. Step 2: Convert to fraction form
    138,631.60/207,947.40 = 124,116.40/x
  3. Step 3: Cross multiply
    138,631.60x = 207,947.40 × 124,116.40
  4. Step 4: Simplify right side
    138,631.60x = 25,809,682,677.36
  5. Step 5: Solve for x
    x = 25,809,682,677.36/138,631.60
  6. Step 6: Final answer
    x = 186,174.60

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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.