Home / 147,122.89-202,392.47-128,891.50

Finding the Fourth Proportional to 147,122.89, 202,392.47 and 128,891.50

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Solution

The fourth proportional to 147,122.89, 202,392.47 and 128,891.50 is: 177,312.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,122.89 : 202,392.47 = 128,891.50 : x
  2. Step 2: Convert to fraction form
    147,122.89/202,392.47 = 128,891.50/x
  3. Step 3: Cross multiply
    147,122.89x = 202,392.47 × 128,891.50
  4. Step 4: Simplify right side
    147,122.89x = 26,086,668,863.25
  5. Step 5: Solve for x
    x = 26,086,668,863.25/147,122.89
  6. Step 6: Final answer
    x = 177,312.10

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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.