Home / 180,784.13-249,455.90-100,211.63

Finding the Fourth Proportional to 180,784.13, 249,455.90 and 100,211.63

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Solution

The fourth proportional to 180,784.13, 249,455.90 and 100,211.63 is: 138,277.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,784.13 : 249,455.90 = 100,211.63 : x
  2. Step 2: Convert to fraction form
    180,784.13/249,455.90 = 100,211.63/x
  3. Step 3: Cross multiply
    180,784.13x = 249,455.90 × 100,211.63
  4. Step 4: Simplify right side
    180,784.13x = 24,998,380,603.78
  5. Step 5: Solve for x
    x = 24,998,380,603.78/180,784.13
  6. Step 6: Final answer
    x = 138,277.52

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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.