Home / 137,904.91-190,330.91-128,899.92

Finding the Fourth Proportional to 137,904.91, 190,330.91 and 128,899.92

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Solution

The fourth proportional to 137,904.91, 190,330.91 and 128,899.92 is: 177,902.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,904.91 : 190,330.91 = 128,899.92 : x
  2. Step 2: Convert to fraction form
    137,904.91/190,330.91 = 128,899.92/x
  3. Step 3: Cross multiply
    137,904.91x = 190,330.91 × 128,899.92
  4. Step 4: Simplify right side
    137,904.91x = 24,533,639,072.53
  5. Step 5: Solve for x
    x = 24,533,639,072.53/137,904.91
  6. Step 6: Final answer
    x = 177,902.58

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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.