Home / 142,637.86-196,842.66-78,106.07

Finding the Fourth Proportional to 142,637.86, 196,842.66 and 78,106.07

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Solution

The fourth proportional to 142,637.86, 196,842.66 and 78,106.07 is: 107,787.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,637.86 : 196,842.66 = 78,106.07 : x
  2. Step 2: Convert to fraction form
    142,637.86/196,842.66 = 78,106.07/x
  3. Step 3: Cross multiply
    142,637.86x = 196,842.66 × 78,106.07
  4. Step 4: Simplify right side
    142,637.86x = 15,374,605,596.73
  5. Step 5: Solve for x
    x = 15,374,605,596.73/142,637.86
  6. Step 6: Final answer
    x = 107,787.69

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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.