Home / 187,420.20-281,033.10-69,030.60

Finding the Fourth Proportional to 187,420.20, 281,033.10 and 69,030.60

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Solution

The fourth proportional to 187,420.20, 281,033.10 and 69,030.60 is: 103,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,420.20 : 281,033.10 = 69,030.60 : x
  2. Step 2: Convert to fraction form
    187,420.20/281,033.10 = 69,030.60/x
  3. Step 3: Cross multiply
    187,420.20x = 281,033.10 × 69,030.60
  4. Step 4: Simplify right side
    187,420.20x = 19,399,883,512.86
  5. Step 5: Solve for x
    x = 19,399,883,512.86/187,420.20
  6. Step 6: Final answer
    x = 103,510.10

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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.