Home / 221,068.90-305,059.80-124,275.25

Finding the Fourth Proportional to 221,068.90, 305,059.80 and 124,275.25

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Solution

The fourth proportional to 221,068.90, 305,059.80 and 124,275.25 is: 171,491.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,068.90 : 305,059.80 = 124,275.25 : x
  2. Step 2: Convert to fraction form
    221,068.90/305,059.80 = 124,275.25/x
  3. Step 3: Cross multiply
    221,068.90x = 305,059.80 × 124,275.25
  4. Step 4: Simplify right side
    221,068.90x = 37,911,382,909.95
  5. Step 5: Solve for x
    x = 37,911,382,909.95/221,068.90
  6. Step 6: Final answer
    x = 171,491.25

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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.