Home / 86,898.15-130,439.40-76,967.37

Finding the Fourth Proportional to 86,898.15, 130,439.40 and 76,967.37

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Solution

The fourth proportional to 86,898.15, 130,439.40 and 76,967.37 is: 115,532.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,898.15 : 130,439.40 = 76,967.37 : x
  2. Step 2: Convert to fraction form
    86,898.15/130,439.40 = 76,967.37/x
  3. Step 3: Cross multiply
    86,898.15x = 130,439.40 × 76,967.37
  4. Step 4: Simplify right side
    86,898.15x = 10,039,577,562.38
  5. Step 5: Solve for x
    x = 10,039,577,562.38/86,898.15
  6. Step 6: Final answer
    x = 115,532.70

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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.