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Finding the Fourth Proportional to 155,136.80, 232,726.80 and 66,389.60

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Solution

The fourth proportional to 155,136.80, 232,726.80 and 66,389.60 is: 99,593.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,136.80 : 232,726.80 = 66,389.60 : x
  2. Step 2: Convert to fraction form
    155,136.80/232,726.80 = 66,389.60/x
  3. Step 3: Cross multiply
    155,136.80x = 232,726.80 × 66,389.60
  4. Step 4: Simplify right side
    155,136.80x = 15,450,639,161.28
  5. Step 5: Solve for x
    x = 15,450,639,161.28/155,136.80
  6. Step 6: Final answer
    x = 99,593.64

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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.