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Finding the Fourth Proportional to 86,373.60, 129,239.64 and 75,794.16

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Solution

The fourth proportional to 86,373.60, 129,239.64 and 75,794.16 is: 113,409.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,373.60 : 129,239.64 = 75,794.16 : x
  2. Step 2: Convert to fraction form
    86,373.60/129,239.64 = 75,794.16/x
  3. Step 3: Cross multiply
    86,373.60x = 129,239.64 × 75,794.16
  4. Step 4: Simplify right side
    86,373.60x = 9,795,609,952.50
  5. Step 5: Solve for x
    x = 9,795,609,952.50/86,373.60
  6. Step 6: Final answer
    x = 113,409.77

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1.5x scale

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.