Home / 199,890.02-275,821.57-128,366.92

Finding the Fourth Proportional to 199,890.02, 275,821.57 and 128,366.92

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Solution

The fourth proportional to 199,890.02, 275,821.57 and 128,366.92 is: 177,129.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,890.02 : 275,821.57 = 128,366.92 : x
  2. Step 2: Convert to fraction form
    199,890.02/275,821.57 = 128,366.92/x
  3. Step 3: Cross multiply
    199,890.02x = 275,821.57 × 128,366.92
  4. Step 4: Simplify right side
    199,890.02x = 35,406,365,410.46
  5. Step 5: Solve for x
    x = 35,406,365,410.46/199,890.02
  6. Step 6: Final answer
    x = 177,129.23

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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.