Home / 158,730.10-219,042.60-87,108.28

Finding the Fourth Proportional to 158,730.10, 219,042.60 and 87,108.28

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Solution

The fourth proportional to 158,730.10, 219,042.60 and 87,108.28 is: 120,206.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,730.10 : 219,042.60 = 87,108.28 : x
  2. Step 2: Convert to fraction form
    158,730.10/219,042.60 = 87,108.28/x
  3. Step 3: Cross multiply
    158,730.10x = 219,042.60 × 87,108.28
  4. Step 4: Simplify right side
    158,730.10x = 19,080,423,258.47
  5. Step 5: Solve for x
    x = 19,080,423,258.47/158,730.10
  6. Step 6: Final answer
    x = 120,206.71

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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.