Home / 86,942.70-130,122.45-76,445.10

Finding the Fourth Proportional to 86,942.70, 130,122.45 and 76,445.10

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Solution

The fourth proportional to 86,942.70, 130,122.45 and 76,445.10 is: 114,411.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,942.70 : 130,122.45 = 76,445.10 : x
  2. Step 2: Convert to fraction form
    86,942.70/130,122.45 = 76,445.10/x
  3. Step 3: Cross multiply
    86,942.70x = 130,122.45 × 76,445.10
  4. Step 4: Simplify right side
    86,942.70x = 9,947,223,702.50
  5. Step 5: Solve for x
    x = 9,947,223,702.50/86,942.70
  6. Step 6: Final answer
    x = 114,411.26

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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.