Home / 180,781.76-249,455.90-100,208.63

Finding the Fourth Proportional to 180,781.76, 249,455.90 and 100,208.63

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Solution

The fourth proportional to 180,781.76, 249,455.90 and 100,208.63 is: 138,275.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,781.76 : 249,455.90 = 100,208.63 : x
  2. Step 2: Convert to fraction form
    180,781.76/249,455.90 = 100,208.63/x
  3. Step 3: Cross multiply
    180,781.76x = 249,455.90 × 100,208.63
  4. Step 4: Simplify right side
    180,781.76x = 24,997,634,858.58
  5. Step 5: Solve for x
    x = 24,997,634,858.58/180,781.76
  6. Step 6: Final answer
    x = 138,275.20

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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.