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Finding the Fourth Proportional to 144,295.43, 216,491.13 and 90,925.74

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Solution

The fourth proportional to 144,295.43, 216,491.13 and 90,925.74 is: 136,418.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,295.43 : 216,491.13 = 90,925.74 : x
  2. Step 2: Convert to fraction form
    144,295.43/216,491.13 = 90,925.74/x
  3. Step 3: Cross multiply
    144,295.43x = 216,491.13 × 90,925.74
  4. Step 4: Simplify right side
    144,295.43x = 19,684,616,198.69
  5. Step 5: Solve for x
    x = 19,684,616,198.69/144,295.43
  6. Step 6: Final answer
    x = 136,418.85

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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.