Home / 159,303.20-219,836.75-87,681.69

Finding the Fourth Proportional to 159,303.20, 219,836.75 and 87,681.69

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Solution

The fourth proportional to 159,303.20, 219,836.75 and 87,681.69 is: 120,999.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,303.20 : 219,836.75 = 87,681.69 : x
  2. Step 2: Convert to fraction form
    159,303.20/219,836.75 = 87,681.69/x
  3. Step 3: Cross multiply
    159,303.20x = 219,836.75 × 87,681.69
  4. Step 4: Simplify right side
    159,303.20x = 19,275,657,325.70
  5. Step 5: Solve for x
    x = 19,275,657,325.70/159,303.20
  6. Step 6: Final answer
    x = 120,999.82

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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.