Home / 101,448.75-139,995.45-56,128.65

Finding the Fourth Proportional to 101,448.75, 139,995.45 and 56,128.65

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Solution

The fourth proportional to 101,448.75, 139,995.45 and 56,128.65 is: 77,455.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,448.75 : 139,995.45 = 56,128.65 : x
  2. Step 2: Convert to fraction form
    101,448.75/139,995.45 = 56,128.65/x
  3. Step 3: Cross multiply
    101,448.75x = 139,995.45 × 56,128.65
  4. Step 4: Simplify right side
    101,448.75x = 7,857,755,614.64
  5. Step 5: Solve for x
    x = 7,857,755,614.64/101,448.75
  6. Step 6: Final answer
    x = 77,455.42

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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.