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Finding the Fourth Proportional to 159,491.48, 220,090.10 and 87,870.06

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Solution

The fourth proportional to 159,491.48, 220,090.10 and 87,870.06 is: 121,256.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,491.48 : 220,090.10 = 87,870.06 : x
  2. Step 2: Convert to fraction form
    159,491.48/220,090.10 = 87,870.06/x
  3. Step 3: Cross multiply
    159,491.48x = 220,090.10 × 87,870.06
  4. Step 4: Simplify right side
    159,491.48x = 19,339,329,853.06
  5. Step 5: Solve for x
    x = 19,339,329,853.06/159,491.48
  6. Step 6: Final answer
    x = 121,256.20

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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.