Home / 112,982.40-169,538.40-77,947.20

Finding the Fourth Proportional to 112,982.40, 169,538.40 and 77,947.20

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Solution

The fourth proportional to 112,982.40, 169,538.40 and 77,947.20 is: 116,965.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,982.40 : 169,538.40 = 77,947.20 : x
  2. Step 2: Convert to fraction form
    112,982.40/169,538.40 = 77,947.20/x
  3. Step 3: Cross multiply
    112,982.40x = 169,538.40 × 77,947.20
  4. Step 4: Simplify right side
    112,982.40x = 13,215,043,572.48
  5. Step 5: Solve for x
    x = 13,215,043,572.48/112,982.40
  6. Step 6: Final answer
    x = 116,965.51

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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.