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Finding the Fourth Proportional to 143,681.76, 214,256.88 and 133,709.04

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Solution

The fourth proportional to 143,681.76, 214,256.88 and 133,709.04 is: 199,385.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,681.76 : 214,256.88 = 133,709.04 : x
  2. Step 2: Convert to fraction form
    143,681.76/214,256.88 = 133,709.04/x
  3. Step 3: Cross multiply
    143,681.76x = 214,256.88 × 133,709.04
  4. Step 4: Simplify right side
    143,681.76x = 28,648,081,738.20
  5. Step 5: Solve for x
    x = 28,648,081,738.20/143,681.76
  6. Step 6: Final answer
    x = 199,385.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.