Home / 101,743.31-140,405.78-56,428.22

Finding the Fourth Proportional to 101,743.31, 140,405.78 and 56,428.22

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Solution

The fourth proportional to 101,743.31, 140,405.78 and 56,428.22 is: 77,870.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,743.31 : 140,405.78 = 56,428.22 : x
  2. Step 2: Convert to fraction form
    101,743.31/140,405.78 = 56,428.22/x
  3. Step 3: Cross multiply
    101,743.31x = 140,405.78 × 56,428.22
  4. Step 4: Simplify right side
    101,743.31x = 7,922,848,735.20
  5. Step 5: Solve for x
    x = 7,922,848,735.20/101,743.31
  6. Step 6: Final answer
    x = 77,870.95

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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.