Home / 144,117.57-198,885.60-90,404.85

Finding the Fourth Proportional to 144,117.57, 198,885.60 and 90,404.85

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Solution

The fourth proportional to 144,117.57, 198,885.60 and 90,404.85 is: 124,760.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,117.57 : 198,885.60 = 90,404.85 : x
  2. Step 2: Convert to fraction form
    144,117.57/198,885.60 = 90,404.85/x
  3. Step 3: Cross multiply
    144,117.57x = 198,885.60 × 90,404.85
  4. Step 4: Simplify right side
    144,117.57x = 17,980,222,835.16
  5. Step 5: Solve for x
    x = 17,980,222,835.16/144,117.57
  6. Step 6: Final answer
    x = 124,760.80

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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.