Home / 141,409.31-195,139.85-77,746.61

Finding the Fourth Proportional to 141,409.31, 195,139.85 and 77,746.61

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Solution

The fourth proportional to 141,409.31, 195,139.85 and 77,746.61 is: 107,287.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,409.31 : 195,139.85 = 77,746.61 : x
  2. Step 2: Convert to fraction form
    141,409.31/195,139.85 = 77,746.61/x
  3. Step 3: Cross multiply
    141,409.31x = 195,139.85 × 77,746.61
  4. Step 4: Simplify right side
    141,409.31x = 15,171,460,448.98
  5. Step 5: Solve for x
    x = 15,171,460,448.98/141,409.31
  6. Step 6: Final answer
    x = 107,287.57

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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.