Home / 159,349.07-219,901.10-87,729.14

Finding the Fourth Proportional to 159,349.07, 219,901.10 and 87,729.14

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Solution

The fourth proportional to 159,349.07, 219,901.10 and 87,729.14 is: 121,065.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,349.07 : 219,901.10 = 87,729.14 : x
  2. Step 2: Convert to fraction form
    159,349.07/219,901.10 = 87,729.14/x
  3. Step 3: Cross multiply
    159,349.07x = 219,901.10 × 87,729.14
  4. Step 4: Simplify right side
    159,349.07x = 19,291,734,499.16
  5. Step 5: Solve for x
    x = 19,291,734,499.16/159,349.07
  6. Step 6: Final answer
    x = 121,065.87

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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.