Home / 138,235.75-190,727.16-77,802.86

Finding the Fourth Proportional to 138,235.75, 190,727.16 and 77,802.86

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Solution

The fourth proportional to 138,235.75, 190,727.16 and 77,802.86 is: 107,346.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,235.75 : 190,727.16 = 77,802.86 : x
  2. Step 2: Convert to fraction form
    138,235.75/190,727.16 = 77,802.86/x
  3. Step 3: Cross multiply
    138,235.75x = 190,727.16 × 77,802.86
  4. Step 4: Simplify right side
    138,235.75x = 14,839,118,712.73
  5. Step 5: Solve for x
    x = 14,839,118,712.73/138,235.75
  6. Step 6: Final answer
    x = 107,346.46

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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.