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Finding the Fourth Proportional to 158,898.38, 219,317.96 and 90,954.74

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Solution

The fourth proportional to 158,898.38, 219,317.96 and 90,954.74 is: 125,539.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,898.38 : 219,317.96 = 90,954.74 : x
  2. Step 2: Convert to fraction form
    158,898.38/219,317.96 = 90,954.74/x
  3. Step 3: Cross multiply
    158,898.38x = 219,317.96 × 90,954.74
  4. Step 4: Simplify right side
    158,898.38x = 19,948,007,574.36
  5. Step 5: Solve for x
    x = 19,948,007,574.36/158,898.38
  6. Step 6: Final answer
    x = 125,539.40

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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.