Home / 131,987.36-182,094.81-86,689.91

Finding the Fourth Proportional to 131,987.36, 182,094.81 and 86,689.91

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Solution

The fourth proportional to 131,987.36, 182,094.81 and 86,689.91 is: 119,600.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,987.36 : 182,094.81 = 86,689.91 : x
  2. Step 2: Convert to fraction form
    131,987.36/182,094.81 = 86,689.91/x
  3. Step 3: Cross multiply
    131,987.36x = 182,094.81 × 86,689.91
  4. Step 4: Simplify right side
    131,987.36x = 15,785,782,690.37
  5. Step 5: Solve for x
    x = 15,785,782,690.37/131,987.36
  6. Step 6: Final answer
    x = 119,600.72

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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.