Home / 158,730.39-219,047.25-87,111.57

Finding the Fourth Proportional to 158,730.39, 219,047.25 and 87,111.57

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Solution

The fourth proportional to 158,730.39, 219,047.25 and 87,111.57 is: 120,213.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,730.39 : 219,047.25 = 87,111.57 : x
  2. Step 2: Convert to fraction form
    158,730.39/219,047.25 = 87,111.57/x
  3. Step 3: Cross multiply
    158,730.39x = 219,047.25 × 87,111.57
  4. Step 4: Simplify right side
    158,730.39x = 19,081,549,851.68
  5. Step 5: Solve for x
    x = 19,081,549,851.68/158,730.39
  6. Step 6: Final answer
    x = 120,213.59

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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.