Home / 147,109.87-202,374.57-128,878.49

Finding the Fourth Proportional to 147,109.87, 202,374.57 and 128,878.49

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Solution

The fourth proportional to 147,109.87, 202,374.57 and 128,878.49 is: 177,294.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,109.87 : 202,374.57 = 128,878.49 : x
  2. Step 2: Convert to fraction form
    147,109.87/202,374.57 = 128,878.49/x
  3. Step 3: Cross multiply
    147,109.87x = 202,374.57 × 128,878.49
  4. Step 4: Simplify right side
    147,109.87x = 26,081,729,260.29
  5. Step 5: Solve for x
    x = 26,081,729,260.29/147,109.87
  6. Step 6: Final answer
    x = 177,294.22

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1.5x scale

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.