Home / 216,775.07-299,154.90-121,287.95

Finding the Fourth Proportional to 216,775.07, 299,154.90 and 121,287.95

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Solution

The fourth proportional to 216,775.07, 299,154.90 and 121,287.95 is: 167,380.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,775.07 : 299,154.90 = 121,287.95 : x
  2. Step 2: Convert to fraction form
    216,775.07/299,154.90 = 121,287.95/x
  3. Step 3: Cross multiply
    216,775.07x = 299,154.90 × 121,287.95
  4. Step 4: Simplify right side
    216,775.07x = 36,283,883,057.68
  5. Step 5: Solve for x
    x = 36,283,883,057.68/216,775.07
  6. Step 6: Final answer
    x = 167,380.34

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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.