Home / 158,933.76-219,328.67-87,318.39

Finding the Fourth Proportional to 158,933.76, 219,328.67 and 87,318.39

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Solution

The fourth proportional to 158,933.76, 219,328.67 and 87,318.39 is: 120,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,933.76 : 219,328.67 = 87,318.39 : x
  2. Step 2: Convert to fraction form
    158,933.76/219,328.67 = 87,318.39/x
  3. Step 3: Cross multiply
    158,933.76x = 219,328.67 × 87,318.39
  4. Step 4: Simplify right side
    158,933.76x = 19,151,426,345.24
  5. Step 5: Solve for x
    x = 19,151,426,345.24/158,933.76
  6. Step 6: Final answer
    x = 120,499.42

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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.