Home / 138,081.10-190,550.67-77,652.17

Finding the Fourth Proportional to 138,081.10, 190,550.67 and 77,652.17

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Solution

The fourth proportional to 138,081.10, 190,550.67 and 77,652.17 is: 107,159.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,081.10 : 190,550.67 = 77,652.17 : x
  2. Step 2: Convert to fraction form
    138,081.10/190,550.67 = 77,652.17/x
  3. Step 3: Cross multiply
    138,081.10x = 190,550.67 × 77,652.17
  4. Step 4: Simplify right side
    138,081.10x = 14,796,673,020.45
  5. Step 5: Solve for x
    x = 14,796,673,020.45/138,081.10
  6. Step 6: Final answer
    x = 107,159.29

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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.