Home / 136,913.58-189,070.02-129,458.61

Finding the Fourth Proportional to 136,913.58, 189,070.02 and 129,458.61

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Solution

The fourth proportional to 136,913.58, 189,070.02 and 129,458.61 is: 178,775.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,913.58 : 189,070.02 = 129,458.61 : x
  2. Step 2: Convert to fraction form
    136,913.58/189,070.02 = 129,458.61/x
  3. Step 3: Cross multiply
    136,913.58x = 189,070.02 × 129,458.61
  4. Step 4: Simplify right side
    136,913.58x = 24,476,741,981.87
  5. Step 5: Solve for x
    x = 24,476,741,981.87/136,913.58
  6. Step 6: Final answer
    x = 178,775.12

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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.