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Finding the Fourth Proportional to 115,294.88, 159,101.34 and 64,312.94

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Solution

The fourth proportional to 115,294.88, 159,101.34 and 64,312.94 is: 88,748.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,294.88 : 159,101.34 = 64,312.94 : x
  2. Step 2: Convert to fraction form
    115,294.88/159,101.34 = 64,312.94/x
  3. Step 3: Cross multiply
    115,294.88x = 159,101.34 × 64,312.94
  4. Step 4: Simplify right side
    115,294.88x = 10,232,274,933.34
  5. Step 5: Solve for x
    x = 10,232,274,933.34/115,294.88
  6. Step 6: Final answer
    x = 88,748.74

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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.