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Finding the Fourth Proportional to 159,809.22, 220,454.37 and 99,356.94

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Solution

The fourth proportional to 159,809.22, 220,454.37 and 99,356.94 is: 137,061.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,809.22 : 220,454.37 = 99,356.94 : x
  2. Step 2: Convert to fraction form
    159,809.22/220,454.37 = 99,356.94/x
  3. Step 3: Cross multiply
    159,809.22x = 220,454.37 × 99,356.94
  4. Step 4: Simplify right side
    159,809.22x = 21,903,671,612.83
  5. Step 5: Solve for x
    x = 21,903,671,612.83/159,809.22
  6. Step 6: Final answer
    x = 137,061.38

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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.