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Finding the Fourth Proportional to 137,775.66, 190,141.39 and 77,350.26

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Solution

The fourth proportional to 137,775.66, 190,141.39 and 77,350.26 is: 106,749.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,775.66 : 190,141.39 = 77,350.26 : x
  2. Step 2: Convert to fraction form
    137,775.66/190,141.39 = 77,350.26/x
  3. Step 3: Cross multiply
    137,775.66x = 190,141.39 × 77,350.26
  4. Step 4: Simplify right side
    137,775.66x = 14,707,485,953.26
  5. Step 5: Solve for x
    x = 14,707,485,953.26/137,775.66
  6. Step 6: Final answer
    x = 106,749.52

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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.