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Finding the Fourth Proportional to 159,968.32, 220,752.05 and 88,346.80

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Solution

The fourth proportional to 159,968.32, 220,752.05 and 88,346.80 is: 121,916.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,968.32 : 220,752.05 = 88,346.80 : x
  2. Step 2: Convert to fraction form
    159,968.32/220,752.05 = 88,346.80/x
  3. Step 3: Cross multiply
    159,968.32x = 220,752.05 × 88,346.80
  4. Step 4: Simplify right side
    159,968.32x = 19,502,736,879.93
  5. Step 5: Solve for x
    x = 19,502,736,879.93/159,968.32
  6. Step 6: Final answer
    x = 121,916.25

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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.