Home / 138,151.08-190,640.67-77,724.27

Finding the Fourth Proportional to 138,151.08, 190,640.67 and 77,724.27

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Solution

The fourth proportional to 138,151.08, 190,640.67 and 77,724.27 is: 107,255.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,151.08 : 190,640.67 = 77,724.27 : x
  2. Step 2: Convert to fraction form
    138,151.08/190,640.67 = 77,724.27/x
  3. Step 3: Cross multiply
    138,151.08x = 190,640.67 × 77,724.27
  4. Step 4: Simplify right side
    138,151.08x = 14,817,406,908.06
  5. Step 5: Solve for x
    x = 14,817,406,908.06/138,151.08
  6. Step 6: Final answer
    x = 107,255.09

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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.