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Finding the Fourth Proportional to 180,781.86, 249,399.12 and 127,101.94

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Solution

The fourth proportional to 180,781.86, 249,399.12 and 127,101.94 is: 175,344.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,781.86 : 249,399.12 = 127,101.94 : x
  2. Step 2: Convert to fraction form
    180,781.86/249,399.12 = 127,101.94/x
  3. Step 3: Cross multiply
    180,781.86x = 249,399.12 × 127,101.94
  4. Step 4: Simplify right side
    180,781.86x = 31,699,111,986.29
  5. Step 5: Solve for x
    x = 31,699,111,986.29/180,781.86
  6. Step 6: Final answer
    x = 175,344.54

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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.