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Finding the Fourth Proportional to 159,577.40, 220,212.90 and 87,955.84

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Solution

The fourth proportional to 159,577.40, 220,212.90 and 87,955.84 is: 121,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,577.40 : 220,212.90 = 87,955.84 : x
  2. Step 2: Convert to fraction form
    159,577.40/220,212.90 = 87,955.84/x
  3. Step 3: Cross multiply
    159,577.40x = 220,212.90 × 87,955.84
  4. Step 4: Simplify right side
    159,577.40x = 19,369,010,598.34
  5. Step 5: Solve for x
    x = 19,369,010,598.34/159,577.40
  6. Step 6: Final answer
    x = 121,376.90

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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.