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Finding the Fourth Proportional to 145,390.82, 200,643.98 and 88,040.84

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Solution

The fourth proportional to 145,390.82, 200,643.98 and 88,040.84 is: 121,499.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,390.82 : 200,643.98 = 88,040.84 : x
  2. Step 2: Convert to fraction form
    145,390.82/200,643.98 = 88,040.84/x
  3. Step 3: Cross multiply
    145,390.82x = 200,643.98 × 88,040.84
  4. Step 4: Simplify right side
    145,390.82x = 17,664,863,096.72
  5. Step 5: Solve for x
    x = 17,664,863,096.72/145,390.82
  6. Step 6: Final answer
    x = 121,499.17

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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.