Home / 216,971.85-299,417.81-121,481.97

Finding the Fourth Proportional to 216,971.85, 299,417.81 and 121,481.97

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Solution

The fourth proportional to 216,971.85, 299,417.81 and 121,481.97 is: 167,643.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,971.85 : 299,417.81 = 121,481.97 : x
  2. Step 2: Convert to fraction form
    216,971.85/299,417.81 = 121,481.97/x
  3. Step 3: Cross multiply
    216,971.85x = 299,417.81 × 121,481.97
  4. Step 4: Simplify right side
    216,971.85x = 36,373,865,411.89
  5. Step 5: Solve for x
    x = 36,373,865,411.89/216,971.85
  6. Step 6: Final answer
    x = 167,643.25

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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.