Home / 180,821.70-249,539.87-100,256.74

Finding the Fourth Proportional to 180,821.70, 249,539.87 and 100,256.74

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Solution

The fourth proportional to 180,821.70, 249,539.87 and 100,256.74 is: 138,357.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,821.70 : 249,539.87 = 100,256.74 : x
  2. Step 2: Convert to fraction form
    180,821.70/249,539.87 = 100,256.74/x
  3. Step 3: Cross multiply
    180,821.70x = 249,539.87 × 100,256.74
  4. Step 4: Simplify right side
    180,821.70x = 25,018,053,493.02
  5. Step 5: Solve for x
    x = 25,018,053,493.02/180,821.70
  6. Step 6: Final answer
    x = 138,357.58

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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.