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Finding the Fourth Proportional to 159,491.82, 220,104.80 and 87,870.30

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Solution

The fourth proportional to 159,491.82, 220,104.80 and 87,870.30 is: 121,264.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,491.82 : 220,104.80 = 87,870.30 : x
  2. Step 2: Convert to fraction form
    159,491.82/220,104.80 = 87,870.30/x
  3. Step 3: Cross multiply
    159,491.82x = 220,104.80 × 87,870.30
  4. Step 4: Simplify right side
    159,491.82x = 19,340,674,368.09
  5. Step 5: Solve for x
    x = 19,340,674,368.09/159,491.82
  6. Step 6: Final answer
    x = 121,264.37

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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.