Home / 135,490.16-186,935.64-87,799.52

Finding the Fourth Proportional to 135,490.16, 186,935.64 and 87,799.52

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Solution

The fourth proportional to 135,490.16, 186,935.64 and 87,799.52 is: 121,136.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,490.16 : 186,935.64 = 87,799.52 : x
  2. Step 2: Convert to fraction form
    135,490.16/186,935.64 = 87,799.52/x
  3. Step 3: Cross multiply
    135,490.16x = 186,935.64 × 87,799.52
  4. Step 4: Simplify right side
    135,490.16x = 16,412,859,462.89
  5. Step 5: Solve for x
    x = 16,412,859,462.89/135,490.16
  6. Step 6: Final answer
    x = 121,136.91

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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.