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Finding the Fourth Proportional to 134,866.80, 186,102.90 and 74,440.80

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Solution

The fourth proportional to 134,866.80, 186,102.90 and 74,440.80 is: 102,720.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,866.80 : 186,102.90 = 74,440.80 : x
  2. Step 2: Convert to fraction form
    134,866.80/186,102.90 = 74,440.80/x
  3. Step 3: Cross multiply
    134,866.80x = 186,102.90 × 74,440.80
  4. Step 4: Simplify right side
    134,866.80x = 13,853,648,758.32
  5. Step 5: Solve for x
    x = 13,853,648,758.32/134,866.80
  6. Step 6: Final answer
    x = 102,720.97

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1.5x scale

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.