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Finding the Fourth Proportional to 115,392, 159,244.80 and 70,671.36

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Solution

The fourth proportional to 115,392, 159,244.80 and 70,671.36 is: 97,528.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,392 : 159,244.80 = 70,671.36 : x
  2. Step 2: Convert to fraction form
    115,392/159,244.80 = 70,671.36/x
  3. Step 3: Cross multiply
    115,392x = 159,244.80 × 70,671.36
  4. Step 4: Simplify right side
    115,392x = 11,254,046,588.93
  5. Step 5: Solve for x
    x = 11,254,046,588.93/115,392
  6. Step 6: Final answer
    x = 97,528.83

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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.