Home / 157,728.12-236,395.27-78,864.90

Finding the Fourth Proportional to 157,728.12, 236,395.27 and 78,864.90

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Solution

The fourth proportional to 157,728.12, 236,395.27 and 78,864.90 is: 118,198.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,728.12 : 236,395.27 = 78,864.90 : x
  2. Step 2: Convert to fraction form
    157,728.12/236,395.27 = 78,864.90/x
  3. Step 3: Cross multiply
    157,728.12x = 236,395.27 × 78,864.90
  4. Step 4: Simplify right side
    157,728.12x = 18,643,289,329.02
  5. Step 5: Solve for x
    x = 18,643,289,329.02/157,728.12
  6. Step 6: Final answer
    x = 118,198.89

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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.