Home / 138,858.18-191,624.40-75,196.08

Finding the Fourth Proportional to 138,858.18, 191,624.40 and 75,196.08

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Solution

The fourth proportional to 138,858.18, 191,624.40 and 75,196.08 is: 103,770.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,858.18 : 191,624.40 = 75,196.08 : x
  2. Step 2: Convert to fraction form
    138,858.18/191,624.40 = 75,196.08/x
  3. Step 3: Cross multiply
    138,858.18x = 191,624.40 × 75,196.08
  4. Step 4: Simplify right side
    138,858.18x = 14,409,403,712.35
  5. Step 5: Solve for x
    x = 14,409,403,712.35/138,858.18
  6. Step 6: Final answer
    x = 103,770.65

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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.