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Finding the Fourth Proportional to 118,752.48, 163,881.12 and 65,040

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Solution

The fourth proportional to 118,752.48, 163,881.12 and 65,040 is: 89,756.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,752.48 : 163,881.12 = 65,040 : x
  2. Step 2: Convert to fraction form
    118,752.48/163,881.12 = 65,040/x
  3. Step 3: Cross multiply
    118,752.48x = 163,881.12 × 65,040
  4. Step 4: Simplify right side
    118,752.48x = 10,658,828,044.80
  5. Step 5: Solve for x
    x = 10,658,828,044.80/118,752.48
  6. Step 6: Final answer
    x = 89,756.68

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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.