Home / 216,699.80-299,047.62-121,215.38

Finding the Fourth Proportional to 216,699.80, 299,047.62 and 121,215.38

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Solution

The fourth proportional to 216,699.80, 299,047.62 and 121,215.38 is: 167,278.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,699.80 : 299,047.62 = 121,215.38 : x
  2. Step 2: Convert to fraction form
    216,699.80/299,047.62 = 121,215.38/x
  3. Step 3: Cross multiply
    216,699.80x = 299,047.62 × 121,215.38
  4. Step 4: Simplify right side
    216,699.80x = 36,249,169,401.16
  5. Step 5: Solve for x
    x = 36,249,169,401.16/216,699.80
  6. Step 6: Final answer
    x = 167,278.28

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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.