Home / 102,578.20-153,737.70-91,432.60

Finding the Fourth Proportional to 102,578.20, 153,737.70 and 91,432.60

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Solution

The fourth proportional to 102,578.20, 153,737.70 and 91,432.60 is: 137,033.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,578.20 : 153,737.70 = 91,432.60 : x
  2. Step 2: Convert to fraction form
    102,578.20/153,737.70 = 91,432.60/x
  3. Step 3: Cross multiply
    102,578.20x = 153,737.70 × 91,432.60
  4. Step 4: Simplify right side
    102,578.20x = 14,056,637,629.02
  5. Step 5: Solve for x
    x = 14,056,637,629.02/102,578.20
  6. Step 6: Final answer
    x = 137,033.38

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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.