Home / 91,024.40-136,536.60-81,347.60

Finding the Fourth Proportional to 91,024.40, 136,536.60 and 81,347.60

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Solution

The fourth proportional to 91,024.40, 136,536.60 and 81,347.60 is: 122,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,024.40 : 136,536.60 = 81,347.60 : x
  2. Step 2: Convert to fraction form
    91,024.40/136,536.60 = 81,347.60/x
  3. Step 3: Cross multiply
    91,024.40x = 136,536.60 × 81,347.60
  4. Step 4: Simplify right side
    91,024.40x = 11,106,924,722.16
  5. Step 5: Solve for x
    x = 11,106,924,722.16/91,024.40
  6. Step 6: Final answer
    x = 122,021.40

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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.