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Finding the Fourth Proportional to 144,270.84, 216,454.34 and 90,901.21

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Solution

The fourth proportional to 144,270.84, 216,454.34 and 90,901.21 is: 136,382.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,270.84 : 216,454.34 = 90,901.21 : x
  2. Step 2: Convert to fraction form
    144,270.84/216,454.34 = 90,901.21/x
  3. Step 3: Cross multiply
    144,270.84x = 216,454.34 × 90,901.21
  4. Step 4: Simplify right side
    144,270.84x = 19,675,961,415.75
  5. Step 5: Solve for x
    x = 19,675,961,415.75/144,270.84
  6. Step 6: Final answer
    x = 136,382.11

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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.