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Finding the Fourth Proportional to 143,454.49, 216,256.13 and 133,820.74

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Solution

The fourth proportional to 143,454.49, 216,256.13 and 133,820.74 is: 201,733.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,454.49 : 216,256.13 = 133,820.74 : x
  2. Step 2: Convert to fraction form
    143,454.49/216,256.13 = 133,820.74/x
  3. Step 3: Cross multiply
    143,454.49x = 216,256.13 × 133,820.74
  4. Step 4: Simplify right side
    143,454.49x = 28,939,555,346.14
  5. Step 5: Solve for x
    x = 28,939,555,346.14/143,454.49
  6. Step 6: Final answer
    x = 201,733.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.