Home / 138,867.98-191,637.52-75,205.58

Finding the Fourth Proportional to 138,867.98, 191,637.52 and 75,205.58

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Solution

The fourth proportional to 138,867.98, 191,637.52 and 75,205.58 is: 103,783.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,867.98 : 191,637.52 = 75,205.58 : x
  2. Step 2: Convert to fraction form
    138,867.98/191,637.52 = 75,205.58/x
  3. Step 3: Cross multiply
    138,867.98x = 191,637.52 × 75,205.58
  4. Step 4: Simplify right side
    138,867.98x = 14,412,210,841.36
  5. Step 5: Solve for x
    x = 14,412,210,841.36/138,867.98
  6. Step 6: Final answer
    x = 103,783.54

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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.