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Finding the Fourth Proportional to 145,361.55, 200,678.36 and 88,010.67

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Solution

The fourth proportional to 145,361.55, 200,678.36 and 88,010.67 is: 121,502.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,361.55 : 200,678.36 = 88,010.67 : x
  2. Step 2: Convert to fraction form
    145,361.55/200,678.36 = 88,010.67/x
  3. Step 3: Cross multiply
    145,361.55x = 200,678.36 × 88,010.67
  4. Step 4: Simplify right side
    145,361.55x = 17,661,836,478.05
  5. Step 5: Solve for x
    x = 17,661,836,478.05/145,361.55
  6. Step 6: Final answer
    x = 121,502.81

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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.