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Finding the Fourth Proportional to 144,718.64, 199,809.24 and 90,353.66

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Solution

The fourth proportional to 144,718.64, 199,809.24 and 90,353.66 is: 124,748.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,718.64 : 199,809.24 = 90,353.66 : x
  2. Step 2: Convert to fraction form
    144,718.64/199,809.24 = 90,353.66/x
  3. Step 3: Cross multiply
    144,718.64x = 199,809.24 × 90,353.66
  4. Step 4: Simplify right side
    144,718.64x = 18,053,496,135.82
  5. Step 5: Solve for x
    x = 18,053,496,135.82/144,718.64
  6. Step 6: Final answer
    x = 124,748.93

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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.