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Finding the Fourth Proportional to 144,395.88, 216,171.48 and 84,240.40

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Solution

The fourth proportional to 144,395.88, 216,171.48 and 84,240.40 is: 126,114.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,395.88 : 216,171.48 = 84,240.40 : x
  2. Step 2: Convert to fraction form
    144,395.88/216,171.48 = 84,240.40/x
  3. Step 3: Cross multiply
    144,395.88x = 216,171.48 × 84,240.40
  4. Step 4: Simplify right side
    144,395.88x = 18,210,371,943.79
  5. Step 5: Solve for x
    x = 18,210,371,943.79/144,395.88
  6. Step 6: Final answer
    x = 126,114.21

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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.