Home / 115,727.51-173,412.66-78,140.27

Finding the Fourth Proportional to 115,727.51, 173,412.66 and 78,140.27

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Solution

The fourth proportional to 115,727.51, 173,412.66 and 78,140.27 is: 117,089.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,727.51 : 173,412.66 = 78,140.27 : x
  2. Step 2: Convert to fraction form
    115,727.51/173,412.66 = 78,140.27/x
  3. Step 3: Cross multiply
    115,727.51x = 173,412.66 × 78,140.27
  4. Step 4: Simplify right side
    115,727.51x = 13,550,512,073.82
  5. Step 5: Solve for x
    x = 13,550,512,073.82/115,727.51
  6. Step 6: Final answer
    x = 117,089.81

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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.