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Finding the Fourth Proportional to 154,854.72, 213,713.64 and 94,428.72

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Solution

The fourth proportional to 154,854.72, 213,713.64 and 94,428.72 is: 130,320.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,854.72 : 213,713.64 = 94,428.72 : x
  2. Step 2: Convert to fraction form
    154,854.72/213,713.64 = 94,428.72/x
  3. Step 3: Cross multiply
    154,854.72x = 213,713.64 × 94,428.72
  4. Step 4: Simplify right side
    154,854.72x = 20,180,705,471.74
  5. Step 5: Solve for x
    x = 20,180,705,471.74/154,854.72
  6. Step 6: Final answer
    x = 130,320.25

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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.