Home / 134,887.68-186,116.13-78,268.68

Finding the Fourth Proportional to 134,887.68, 186,116.13 and 78,268.68

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Solution

The fourth proportional to 134,887.68, 186,116.13 and 78,268.68 is: 107,994.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,887.68 : 186,116.13 = 78,268.68 : x
  2. Step 2: Convert to fraction form
    134,887.68/186,116.13 = 78,268.68/x
  3. Step 3: Cross multiply
    134,887.68x = 186,116.13 × 78,268.68
  4. Step 4: Simplify right side
    134,887.68x = 14,567,063,821.81
  5. Step 5: Solve for x
    x = 14,567,063,821.81/134,887.68
  6. Step 6: Final answer
    x = 107,994.03

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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.