Home / 138,678.06-191,374.83-75,014.49

Finding the Fourth Proportional to 138,678.06, 191,374.83 and 75,014.49

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Solution

The fourth proportional to 138,678.06, 191,374.83 and 75,014.49 is: 103,519.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,678.06 : 191,374.83 = 75,014.49 : x
  2. Step 2: Convert to fraction form
    138,678.06/191,374.83 = 75,014.49/x
  3. Step 3: Cross multiply
    138,678.06x = 191,374.83 × 75,014.49
  4. Step 4: Simplify right side
    138,678.06x = 14,355,885,271.29
  5. Step 5: Solve for x
    x = 14,355,885,271.29/138,678.06
  6. Step 6: Final answer
    x = 103,519.51

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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.