Home / 90,973.40-136,460.10-81,350.60

Finding the Fourth Proportional to 90,973.40, 136,460.10 and 81,350.60

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Solution

The fourth proportional to 90,973.40, 136,460.10 and 81,350.60 is: 122,025.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,973.40 : 136,460.10 = 81,350.60 : x
  2. Step 2: Convert to fraction form
    90,973.40/136,460.10 = 81,350.60/x
  3. Step 3: Cross multiply
    90,973.40x = 136,460.10 × 81,350.60
  4. Step 4: Simplify right side
    90,973.40x = 11,101,111,011.06
  5. Step 5: Solve for x
    x = 11,101,111,011.06/90,973.40
  6. Step 6: Final answer
    x = 122,025.90

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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.