Home / 147,671.28-203,357.49-128,281.29

Finding the Fourth Proportional to 147,671.28, 203,357.49 and 128,281.29

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Solution

The fourth proportional to 147,671.28, 203,357.49 and 128,281.29 is: 176,655.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,671.28 : 203,357.49 = 128,281.29 : x
  2. Step 2: Convert to fraction form
    147,671.28/203,357.49 = 128,281.29/x
  3. Step 3: Cross multiply
    147,671.28x = 203,357.49 × 128,281.29
  4. Step 4: Simplify right side
    147,671.28x = 26,086,961,148.36
  5. Step 5: Solve for x
    x = 26,086,961,148.36/147,671.28
  6. Step 6: Final answer
    x = 176,655.62

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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.