Home / 86,938.70-130,116.45-76,441.10

Finding the Fourth Proportional to 86,938.70, 130,116.45 and 76,441.10

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Solution

The fourth proportional to 86,938.70, 130,116.45 and 76,441.10 is: 114,405.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,938.70 : 130,116.45 = 76,441.10 : x
  2. Step 2: Convert to fraction form
    86,938.70/130,116.45 = 76,441.10/x
  3. Step 3: Cross multiply
    86,938.70x = 130,116.45 × 76,441.10
  4. Step 4: Simplify right side
    86,938.70x = 9,946,244,566.10
  5. Step 5: Solve for x
    x = 9,946,244,566.10/86,938.70
  6. Step 6: Final answer
    x = 114,405.26

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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.