Home / 102,502.20-153,623.70-91,356.60

Finding the Fourth Proportional to 102,502.20, 153,623.70 and 91,356.60

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Solution

The fourth proportional to 102,502.20, 153,623.70 and 91,356.60 is: 136,919.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,502.20 : 153,623.70 = 91,356.60 : x
  2. Step 2: Convert to fraction form
    102,502.20/153,623.70 = 91,356.60/x
  3. Step 3: Cross multiply
    102,502.20x = 153,623.70 × 91,356.60
  4. Step 4: Simplify right side
    102,502.20x = 14,034,538,911.42
  5. Step 5: Solve for x
    x = 14,034,538,911.42/102,502.20
  6. Step 6: Final answer
    x = 136,919.39

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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.