Home / 90,741.60-136,094.64-86,240.82

Finding the Fourth Proportional to 90,741.60, 136,094.64 and 86,240.82

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Solution

The fourth proportional to 90,741.60, 136,094.64 and 86,240.82 is: 129,344.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,741.60 : 136,094.64 = 86,240.82 : x
  2. Step 2: Convert to fraction form
    90,741.60/136,094.64 = 86,240.82/x
  3. Step 3: Cross multiply
    90,741.60x = 136,094.64 × 86,240.82
  4. Step 4: Simplify right side
    90,741.60x = 11,736,913,351.20
  5. Step 5: Solve for x
    x = 11,736,913,351.20/90,741.60
  6. Step 6: Final answer
    x = 129,344.35

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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.