Home / 136,005.16-204,352.18-86,108.72

Finding the Fourth Proportional to 136,005.16, 204,352.18 and 86,108.72

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Solution

The fourth proportional to 136,005.16, 204,352.18 and 86,108.72 is: 129,381.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,005.16 : 204,352.18 = 86,108.72 : x
  2. Step 2: Convert to fraction form
    136,005.16/204,352.18 = 86,108.72/x
  3. Step 3: Cross multiply
    136,005.16x = 204,352.18 × 86,108.72
  4. Step 4: Simplify right side
    136,005.16x = 17,596,504,649.01
  5. Step 5: Solve for x
    x = 17,596,504,649.01/136,005.16
  6. Step 6: Final answer
    x = 129,381.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.