Home / 86,765.60-130,148.40-72,003.35

Finding the Fourth Proportional to 86,765.60, 130,148.40 and 72,003.35

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Solution

The fourth proportional to 86,765.60, 130,148.40 and 72,003.35 is: 108,005.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,765.60 : 130,148.40 = 72,003.35 : x
  2. Step 2: Convert to fraction form
    86,765.60/130,148.40 = 72,003.35/x
  3. Step 3: Cross multiply
    86,765.60x = 130,148.40 × 72,003.35
  4. Step 4: Simplify right side
    86,765.60x = 9,371,120,797.14
  5. Step 5: Solve for x
    x = 9,371,120,797.14/86,765.60
  6. Step 6: Final answer
    x = 108,005.03

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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.