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Finding the Fourth Proportional to 112,718.40, 168,962.40 and 65,947.20

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Solution

The fourth proportional to 112,718.40, 168,962.40 and 65,947.20 is: 98,853.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,718.40 : 168,962.40 = 65,947.20 : x
  2. Step 2: Convert to fraction form
    112,718.40/168,962.40 = 65,947.20/x
  3. Step 3: Cross multiply
    112,718.40x = 168,962.40 × 65,947.20
  4. Step 4: Simplify right side
    112,718.40x = 11,142,597,185.28
  5. Step 5: Solve for x
    x = 11,142,597,185.28/112,718.40
  6. Step 6: Final answer
    x = 98,853.40

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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.