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Finding the Fourth Proportional to 156,952.80, 216,644.40 and 100,364.40

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Solution

The fourth proportional to 156,952.80, 216,644.40 and 100,364.40 is: 138,534.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,952.80 : 216,644.40 = 100,364.40 : x
  2. Step 2: Convert to fraction form
    156,952.80/216,644.40 = 100,364.40/x
  3. Step 3: Cross multiply
    156,952.80x = 216,644.40 × 100,364.40
  4. Step 4: Simplify right side
    156,952.80x = 21,743,385,219.36
  5. Step 5: Solve for x
    x = 21,743,385,219.36/156,952.80
  6. Step 6: Final answer
    x = 138,534.55

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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.