Home / 199,891.02-275,822.95-128,367.92

Finding the Fourth Proportional to 199,891.02, 275,822.95 and 128,367.92

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Solution

The fourth proportional to 199,891.02, 275,822.95 and 128,367.92 is: 177,130.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,891.02 : 275,822.95 = 128,367.92 : x
  2. Step 2: Convert to fraction form
    199,891.02/275,822.95 = 128,367.92/x
  3. Step 3: Cross multiply
    199,891.02x = 275,822.95 × 128,367.92
  4. Step 4: Simplify right side
    199,891.02x = 35,406,818,379.76
  5. Step 5: Solve for x
    x = 35,406,818,379.76/199,891.02
  6. Step 6: Final answer
    x = 177,130.61

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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.