Home / 115,853.15-173,670.16-87,345.87

Finding the Fourth Proportional to 115,853.15, 173,670.16 and 87,345.87

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Solution

The fourth proportional to 115,853.15, 173,670.16 and 87,345.87 is: 130,936.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,853.15 : 173,670.16 = 87,345.87 : x
  2. Step 2: Convert to fraction form
    115,853.15/173,670.16 = 87,345.87/x
  3. Step 3: Cross multiply
    115,853.15x = 173,670.16 × 87,345.87
  4. Step 4: Simplify right side
    115,853.15x = 15,169,371,651.14
  5. Step 5: Solve for x
    x = 15,169,371,651.14/115,853.15
  6. Step 6: Final answer
    x = 130,936.20

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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.