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Finding the Fourth Proportional to 118,392.73, 163,384.36 and 64,681.20

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Solution

The fourth proportional to 118,392.73, 163,384.36 and 64,681.20 is: 89,261.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,392.73 : 163,384.36 = 64,681.20 : x
  2. Step 2: Convert to fraction form
    118,392.73/163,384.36 = 64,681.20/x
  3. Step 3: Cross multiply
    118,392.73x = 163,384.36 × 64,681.20
  4. Step 4: Simplify right side
    118,392.73x = 10,567,896,304.33
  5. Step 5: Solve for x
    x = 10,567,896,304.33/118,392.73
  6. Step 6: Final answer
    x = 89,261.36

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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.