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Finding the Fourth Proportional to 145,230.84, 200,385.79 and 87,868.73

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Solution

The fourth proportional to 145,230.84, 200,385.79 and 87,868.73 is: 121,239.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,230.84 : 200,385.79 = 87,868.73 : x
  2. Step 2: Convert to fraction form
    145,230.84/200,385.79 = 87,868.73/x
  3. Step 3: Cross multiply
    145,230.84x = 200,385.79 × 87,868.73
  4. Step 4: Simplify right side
    145,230.84x = 17,607,645,158.64
  5. Step 5: Solve for x
    x = 17,607,645,158.64/145,230.84
  6. Step 6: Final answer
    x = 121,239.02

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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.