Home / 190,478.16-285,757.18-72,146.88

Finding the Fourth Proportional to 190,478.16, 285,757.18 and 72,146.88

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Solution

The fourth proportional to 190,478.16, 285,757.18 and 72,146.88 is: 108,235.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,478.16 : 285,757.18 = 72,146.88 : x
  2. Step 2: Convert to fraction form
    190,478.16/285,757.18 = 72,146.88/x
  3. Step 3: Cross multiply
    190,478.16x = 285,757.18 × 72,146.88
  4. Step 4: Simplify right side
    190,478.16x = 20,616,488,974.60
  5. Step 5: Solve for x
    x = 20,616,488,974.60/190,478.16
  6. Step 6: Final answer
    x = 108,235.45

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1.5x scale

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.