Home / 138,219.68-190,730.76-77,795.12

Finding the Fourth Proportional to 138,219.68, 190,730.76 and 77,795.12

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Solution

The fourth proportional to 138,219.68, 190,730.76 and 77,795.12 is: 107,350.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,219.68 : 190,730.76 = 77,795.12 : x
  2. Step 2: Convert to fraction form
    138,219.68/190,730.76 = 77,795.12/x
  3. Step 3: Cross multiply
    138,219.68x = 190,730.76 × 77,795.12
  4. Step 4: Simplify right side
    138,219.68x = 14,837,922,361.89
  5. Step 5: Solve for x
    x = 14,837,922,361.89/138,219.68
  6. Step 6: Final answer
    x = 107,350.29

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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.