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Finding the Fourth Proportional to 159,313.69, 219,853.01 and 87,694.91

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Solution

The fourth proportional to 159,313.69, 219,853.01 and 87,694.91 is: 121,019.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,313.69 : 219,853.01 = 87,694.91 : x
  2. Step 2: Convert to fraction form
    159,313.69/219,853.01 = 87,694.91/x
  3. Step 3: Cross multiply
    159,313.69x = 219,853.01 × 87,694.91
  4. Step 4: Simplify right side
    159,313.69x = 19,279,989,925.18
  5. Step 5: Solve for x
    x = 19,279,989,925.18/159,313.69
  6. Step 6: Final answer
    x = 121,019.04

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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.