Home / 216,690.18-299,033.25-121,190.79

Finding the Fourth Proportional to 216,690.18, 299,033.25 and 121,190.79

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Solution

The fourth proportional to 216,690.18, 299,033.25 and 121,190.79 is: 167,243.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,690.18 : 299,033.25 = 121,190.79 : x
  2. Step 2: Convert to fraction form
    216,690.18/299,033.25 = 121,190.79/x
  3. Step 3: Cross multiply
    216,690.18x = 299,033.25 × 121,190.79
  4. Step 4: Simplify right side
    216,690.18x = 36,240,075,803.77
  5. Step 5: Solve for x
    x = 36,240,075,803.77/216,690.18
  6. Step 6: Final answer
    x = 167,243.74

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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.