Home / 136,988.64-189,043.67-76,559.22

Finding the Fourth Proportional to 136,988.64, 189,043.67 and 76,559.22

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Solution

The fourth proportional to 136,988.64, 189,043.67 and 76,559.22 is: 105,651.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,988.64 : 189,043.67 = 76,559.22 : x
  2. Step 2: Convert to fraction form
    136,988.64/189,043.67 = 76,559.22/x
  3. Step 3: Cross multiply
    136,988.64x = 189,043.67 × 76,559.22
  4. Step 4: Simplify right side
    136,988.64x = 14,473,035,538.34
  5. Step 5: Solve for x
    x = 14,473,035,538.34/136,988.64
  6. Step 6: Final answer
    x = 105,651.36

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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.