Home / 136,419.68-188,267.80-76,807.52

Finding the Fourth Proportional to 136,419.68, 188,267.80 and 76,807.52

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Solution

The fourth proportional to 136,419.68, 188,267.80 and 76,807.52 is: 105,999.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,419.68 : 188,267.80 = 76,807.52 : x
  2. Step 2: Convert to fraction form
    136,419.68/188,267.80 = 76,807.52/x
  3. Step 3: Cross multiply
    136,419.68x = 188,267.80 × 76,807.52
  4. Step 4: Simplify right side
    136,419.68x = 14,460,382,813.86
  5. Step 5: Solve for x
    x = 14,460,382,813.86/136,419.68
  6. Step 6: Final answer
    x = 105,999.24

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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.