Home / 87,369.10-130,856.70-61,190.68

Finding the Fourth Proportional to 87,369.10, 130,856.70 and 61,190.68

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Solution

The fourth proportional to 87,369.10, 130,856.70 and 61,190.68 is: 91,648.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,369.10 : 130,856.70 = 61,190.68 : x
  2. Step 2: Convert to fraction form
    87,369.10/130,856.70 = 61,190.68/x
  3. Step 3: Cross multiply
    87,369.10x = 130,856.70 × 61,190.68
  4. Step 4: Simplify right side
    87,369.10x = 8,007,210,455.56
  5. Step 5: Solve for x
    x = 8,007,210,455.56/87,369.10
  6. Step 6: Final answer
    x = 91,648.08

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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.