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Finding the Fourth Proportional to 159,778.77, 220,574.60 and 99,368.88

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Solution

The fourth proportional to 159,778.77, 220,574.60 and 99,368.88 is: 137,178.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,778.77 : 220,574.60 = 99,368.88 : x
  2. Step 2: Convert to fraction form
    159,778.77/220,574.60 = 99,368.88/x
  3. Step 3: Cross multiply
    159,778.77x = 220,574.60 × 99,368.88
  4. Step 4: Simplify right side
    159,778.77x = 21,918,251,206.87
  5. Step 5: Solve for x
    x = 21,918,251,206.87/159,778.77
  6. Step 6: Final answer
    x = 137,178.75

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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.