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Finding the Fourth Proportional to 144,370.79, 216,019.82 and 90,812.68

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Solution

The fourth proportional to 144,370.79, 216,019.82 and 90,812.68 is: 135,881.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,370.79 : 216,019.82 = 90,812.68 : x
  2. Step 2: Convert to fraction form
    144,370.79/216,019.82 = 90,812.68/x
  3. Step 3: Cross multiply
    144,370.79x = 216,019.82 × 90,812.68
  4. Step 4: Simplify right side
    144,370.79x = 19,617,338,474.30
  5. Step 5: Solve for x
    x = 19,617,338,474.30/144,370.79
  6. Step 6: Final answer
    x = 135,881.63

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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.