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Finding the Fourth Proportional to 115,838.74, 159,809.96 and 70,480.36

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Solution

The fourth proportional to 115,838.74, 159,809.96 and 70,480.36 is: 97,234.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,838.74 : 159,809.96 = 70,480.36 : x
  2. Step 2: Convert to fraction form
    115,838.74/159,809.96 = 70,480.36/x
  3. Step 3: Cross multiply
    115,838.74x = 159,809.96 × 70,480.36
  4. Step 4: Simplify right side
    115,838.74x = 11,263,463,888.35
  5. Step 5: Solve for x
    x = 11,263,463,888.35/115,838.74
  6. Step 6: Final answer
    x = 97,234.00

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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.