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Finding the Fourth Proportional to 86,871.60, 130,501.80 and 83,329.20

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Solution

The fourth proportional to 86,871.60, 130,501.80 and 83,329.20 is: 125,180.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,871.60 : 130,501.80 = 83,329.20 : x
  2. Step 2: Convert to fraction form
    86,871.60/130,501.80 = 83,329.20/x
  3. Step 3: Cross multiply
    86,871.60x = 130,501.80 × 83,329.20
  4. Step 4: Simplify right side
    86,871.60x = 10,874,610,592.56
  5. Step 5: Solve for x
    x = 10,874,610,592.56/86,871.60
  6. Step 6: Final answer
    x = 125,180.27

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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.