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Finding the Fourth Proportional to 112,164.52, 154,786.74 and 64,420.96

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Solution

The fourth proportional to 112,164.52, 154,786.74 and 64,420.96 is: 88,900.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,164.52 : 154,786.74 = 64,420.96 : x
  2. Step 2: Convert to fraction form
    112,164.52/154,786.74 = 64,420.96/x
  3. Step 3: Cross multiply
    112,164.52x = 154,786.74 × 64,420.96
  4. Step 4: Simplify right side
    112,164.52x = 9,971,510,386.07
  5. Step 5: Solve for x
    x = 9,971,510,386.07/112,164.52
  6. Step 6: Final answer
    x = 88,900.75

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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.