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Finding the Fourth Proportional to 128,871.81, 193,363.07 and 62,361.63

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Solution

The fourth proportional to 128,871.81, 193,363.07 and 62,361.63 is: 93,569.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,871.81 : 193,363.07 = 62,361.63 : x
  2. Step 2: Convert to fraction form
    128,871.81/193,363.07 = 62,361.63/x
  3. Step 3: Cross multiply
    128,871.81x = 193,363.07 × 62,361.63
  4. Step 4: Simplify right side
    128,871.81x = 12,058,435,915.20
  5. Step 5: Solve for x
    x = 12,058,435,915.20/128,871.81
  6. Step 6: Final answer
    x = 93,569.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.