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Finding the Fourth Proportional to 159,807.19, 220,526.43 and 91,776.20

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Solution

The fourth proportional to 159,807.19, 220,526.43 and 91,776.20 is: 126,646.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,807.19 : 220,526.43 = 91,776.20 : x
  2. Step 2: Convert to fraction form
    159,807.19/220,526.43 = 91,776.20/x
  3. Step 3: Cross multiply
    159,807.19x = 220,526.43 × 91,776.20
  4. Step 4: Simplify right side
    159,807.19x = 20,239,077,744.97
  5. Step 5: Solve for x
    x = 20,239,077,744.97/159,807.19
  6. Step 6: Final answer
    x = 126,646.85

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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.