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Finding the Fourth Proportional to 124,003.40, 186,062.70 and 64,905.80

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Solution

The fourth proportional to 124,003.40, 186,062.70 and 64,905.80 is: 97,388.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,003.40 : 186,062.70 = 64,905.80 : x
  2. Step 2: Convert to fraction form
    124,003.40/186,062.70 = 64,905.80/x
  3. Step 3: Cross multiply
    124,003.40x = 186,062.70 × 64,905.80
  4. Step 4: Simplify right side
    124,003.40x = 12,076,548,393.66
  5. Step 5: Solve for x
    x = 12,076,548,393.66/124,003.40
  6. Step 6: Final answer
    x = 97,388.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.