Home / 141,818.95-195,719.40-81,409.15

Finding the Fourth Proportional to 141,818.95, 195,719.40 and 81,409.15

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Solution

The fourth proportional to 141,818.95, 195,719.40 and 81,409.15 is: 112,349.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,818.95 : 195,719.40 = 81,409.15 : x
  2. Step 2: Convert to fraction form
    141,818.95/195,719.40 = 81,409.15/x
  3. Step 3: Cross multiply
    141,818.95x = 195,719.40 × 81,409.15
  4. Step 4: Simplify right side
    141,818.95x = 15,933,349,992.51
  5. Step 5: Solve for x
    x = 15,933,349,992.51/141,818.95
  6. Step 6: Final answer
    x = 112,349.94

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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.