Home / 114,147.51-157,500.09-78,324.45

Finding the Fourth Proportional to 114,147.51, 157,500.09 and 78,324.45

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Solution

The fourth proportional to 114,147.51, 157,500.09 and 78,324.45 is: 108,071.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,147.51 : 157,500.09 = 78,324.45 : x
  2. Step 2: Convert to fraction form
    114,147.51/157,500.09 = 78,324.45/x
  3. Step 3: Cross multiply
    114,147.51x = 157,500.09 × 78,324.45
  4. Step 4: Simplify right side
    114,147.51x = 12,336,107,924.20
  5. Step 5: Solve for x
    x = 12,336,107,924.20/114,147.51
  6. Step 6: Final answer
    x = 108,071.63

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1.5x scale

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.