Home / 138,678.06-191,374.80-75,014.52

Finding the Fourth Proportional to 138,678.06, 191,374.80 and 75,014.52

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Solution

The fourth proportional to 138,678.06, 191,374.80 and 75,014.52 is: 103,519.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,678.06 : 191,374.80 = 75,014.52 : x
  2. Step 2: Convert to fraction form
    138,678.06/191,374.80 = 75,014.52/x
  3. Step 3: Cross multiply
    138,678.06x = 191,374.80 × 75,014.52
  4. Step 4: Simplify right side
    138,678.06x = 14,355,888,762.10
  5. Step 5: Solve for x
    x = 14,355,888,762.10/138,678.06
  6. Step 6: Final answer
    x = 103,519.54

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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.