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Finding the Fourth Proportional to 111,292.62, 153,515.58 and 90,904.31

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Solution

The fourth proportional to 111,292.62, 153,515.58 and 90,904.31 is: 125,392.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,292.62 : 153,515.58 = 90,904.31 : x
  2. Step 2: Convert to fraction form
    111,292.62/153,515.58 = 90,904.31/x
  3. Step 3: Cross multiply
    111,292.62x = 153,515.58 × 90,904.31
  4. Step 4: Simplify right side
    111,292.62x = 13,955,227,106.57
  5. Step 5: Solve for x
    x = 13,955,227,106.57/111,292.62
  6. Step 6: Final answer
    x = 125,392.21

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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.