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Finding the Fourth Proportional to 111,804.16, 154,275.70 and 75,584.40

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Solution

The fourth proportional to 111,804.16, 154,275.70 and 75,584.40 is: 104,296.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,804.16 : 154,275.70 = 75,584.40 : x
  2. Step 2: Convert to fraction form
    111,804.16/154,275.70 = 75,584.40/x
  3. Step 3: Cross multiply
    111,804.16x = 154,275.70 × 75,584.40
  4. Step 4: Simplify right side
    111,804.16x = 11,660,836,219.08
  5. Step 5: Solve for x
    x = 11,660,836,219.08/111,804.16
  6. Step 6: Final answer
    x = 104,296.98

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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.