Home / 87,368.10-130,855.20-61,189.68

Finding the Fourth Proportional to 87,368.10, 130,855.20 and 61,189.68

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Solution

The fourth proportional to 87,368.10, 130,855.20 and 61,189.68 is: 91,646.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,368.10 : 130,855.20 = 61,189.68 : x
  2. Step 2: Convert to fraction form
    87,368.10/130,855.20 = 61,189.68/x
  3. Step 3: Cross multiply
    87,368.10x = 130,855.20 × 61,189.68
  4. Step 4: Simplify right side
    87,368.10x = 8,006,987,814.34
  5. Step 5: Solve for x
    x = 8,006,987,814.34/87,368.10
  6. Step 6: Final answer
    x = 91,646.58

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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.