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Finding the Fourth Proportional to 163,320.66, 225,393.66 and 90,732.06

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Solution

The fourth proportional to 163,320.66, 225,393.66 and 90,732.06 is: 125,216.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,320.66 : 225,393.66 = 90,732.06 : x
  2. Step 2: Convert to fraction form
    163,320.66/225,393.66 = 90,732.06/x
  3. Step 3: Cross multiply
    163,320.66x = 225,393.66 × 90,732.06
  4. Step 4: Simplify right side
    163,320.66x = 20,450,431,082.74
  5. Step 5: Solve for x
    x = 20,450,431,082.74/163,320.66
  6. Step 6: Final answer
    x = 125,216.44

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1.5x scale

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.