Home / 154,663.93-213,426.12-90,989.43

Finding the Fourth Proportional to 154,663.93, 213,426.12 and 90,989.43

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Solution

The fourth proportional to 154,663.93, 213,426.12 and 90,989.43 is: 125,559.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,663.93 : 213,426.12 = 90,989.43 : x
  2. Step 2: Convert to fraction form
    154,663.93/213,426.12 = 90,989.43/x
  3. Step 3: Cross multiply
    154,663.93x = 213,426.12 × 90,989.43
  4. Step 4: Simplify right side
    154,663.93x = 19,419,521,005.91
  5. Step 5: Solve for x
    x = 19,419,521,005.91/154,663.93
  6. Step 6: Final answer
    x = 125,559.47

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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.