Home / 101,724.82-140,374.64-56,400.16

Finding the Fourth Proportional to 101,724.82, 140,374.64 and 56,400.16

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Solution

The fourth proportional to 101,724.82, 140,374.64 and 56,400.16 is: 77,829.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,724.82 : 140,374.64 = 56,400.16 : x
  2. Step 2: Convert to fraction form
    101,724.82/140,374.64 = 56,400.16/x
  3. Step 3: Cross multiply
    101,724.82x = 140,374.64 × 56,400.16
  4. Step 4: Simplify right side
    101,724.82x = 7,917,152,155.94
  5. Step 5: Solve for x
    x = 7,917,152,155.94/101,724.82
  6. Step 6: Final answer
    x = 77,829.11

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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.