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Finding the Fourth Proportional to 101.04, 152.16 and 77.16

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Solution

The fourth proportional to 101.04, 152.16 and 77.16 is: 116.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101.04 : 152.16 = 77.16 : x
  2. Step 2: Convert to fraction form
    101.04/152.16 = 77.16/x
  3. Step 3: Cross multiply
    101.04x = 152.16 × 77.16
  4. Step 4: Simplify right side
    101.04x = 11,740.67
  5. Step 5: Solve for x
    x = 11,740.67/101.04
  6. Step 6: Final answer
    x = 116.20

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.