Home / 124,631.40-186,947.10-72,143.40

Finding the Fourth Proportional to 124,631.40, 186,947.10 and 72,143.40

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Solution

The fourth proportional to 124,631.40, 186,947.10 and 72,143.40 is: 108,215.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,631.40 : 186,947.10 = 72,143.40 : x
  2. Step 2: Convert to fraction form
    124,631.40/186,947.10 = 72,143.40/x
  3. Step 3: Cross multiply
    124,631.40x = 186,947.10 × 72,143.40
  4. Step 4: Simplify right side
    124,631.40x = 13,486,999,414.14
  5. Step 5: Solve for x
    x = 13,486,999,414.14/124,631.40
  6. Step 6: Final answer
    x = 108,215.10

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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.