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Finding the Fourth Proportional to 118,758.74, 163,888.81 and 65,048.76

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Solution

The fourth proportional to 118,758.74, 163,888.81 and 65,048.76 is: 89,768.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,758.74 : 163,888.81 = 65,048.76 : x
  2. Step 2: Convert to fraction form
    118,758.74/163,888.81 = 65,048.76/x
  3. Step 3: Cross multiply
    118,758.74x = 163,888.81 × 65,048.76
  4. Step 4: Simplify right side
    118,758.74x = 10,660,763,868.38
  5. Step 5: Solve for x
    x = 10,660,763,868.38/118,758.74
  6. Step 6: Final answer
    x = 89,768.25

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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.