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Finding the Fourth Proportional to 90,768, 136,152.96 and 25,104

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Solution

The fourth proportional to 90,768, 136,152.96 and 25,104 is: 37,656.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,768 : 136,152.96 = 25,104 : x
  2. Step 2: Convert to fraction form
    90,768/136,152.96 = 25,104/x
  3. Step 3: Cross multiply
    90,768x = 136,152.96 × 25,104
  4. Step 4: Simplify right side
    90,768x = 3,417,983,907.84
  5. Step 5: Solve for x
    x = 3,417,983,907.84/90,768
  6. Step 6: Final answer
    x = 37,656.27

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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.