Home / 109,623.16-151,021.02-90,377.56

Finding the Fourth Proportional to 109,623.16, 151,021.02 and 90,377.56

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Solution

The fourth proportional to 109,623.16, 151,021.02 and 90,377.56 is: 124,507.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,623.16 : 151,021.02 = 90,377.56 : x
  2. Step 2: Convert to fraction form
    109,623.16/151,021.02 = 90,377.56/x
  3. Step 3: Cross multiply
    109,623.16x = 151,021.02 × 90,377.56
  4. Step 4: Simplify right side
    109,623.16x = 13,648,911,296.31
  5. Step 5: Solve for x
    x = 13,648,911,296.31/109,623.16
  6. Step 6: Final answer
    x = 124,507.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.