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Finding the Fourth Proportional to 115,749, 159,754.07 and 68,002.34

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Solution

The fourth proportional to 115,749, 159,754.07 and 68,002.34 is: 93,855.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,749 : 159,754.07 = 68,002.34 : x
  2. Step 2: Convert to fraction form
    115,749/159,754.07 = 68,002.34/x
  3. Step 3: Cross multiply
    115,749x = 159,754.07 × 68,002.34
  4. Step 4: Simplify right side
    115,749x = 10,863,649,955.76
  5. Step 5: Solve for x
    x = 10,863,649,955.76/115,749
  6. Step 6: Final answer
    x = 93,855.24

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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.