Home / 118,121.66-163,047.39-70,389.98

Finding the Fourth Proportional to 118,121.66, 163,047.39 and 70,389.98

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Solution

The fourth proportional to 118,121.66, 163,047.39 and 70,389.98 is: 97,161.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,121.66 : 163,047.39 = 70,389.98 : x
  2. Step 2: Convert to fraction form
    118,121.66/163,047.39 = 70,389.98/x
  3. Step 3: Cross multiply
    118,121.66x = 163,047.39 × 70,389.98
  4. Step 4: Simplify right side
    118,121.66x = 11,476,902,521.15
  5. Step 5: Solve for x
    x = 11,476,902,521.15/118,121.66
  6. Step 6: Final answer
    x = 97,161.71

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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.