Home / 211,063.50-291,267.66-121,639.50

Finding the Fourth Proportional to 211,063.50, 291,267.66 and 121,639.50

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Solution

The fourth proportional to 211,063.50, 291,267.66 and 121,639.50 is: 167,862.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,063.50 : 291,267.66 = 121,639.50 : x
  2. Step 2: Convert to fraction form
    211,063.50/291,267.66 = 121,639.50/x
  3. Step 3: Cross multiply
    211,063.50x = 291,267.66 × 121,639.50
  4. Step 4: Simplify right side
    211,063.50x = 35,429,652,528.57
  5. Step 5: Solve for x
    x = 35,429,652,528.57/211,063.50
  6. Step 6: Final answer
    x = 167,862.53

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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.