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Finding the Fourth Proportional to 180,668.85, 249,409.68 and 126,999.87

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Solution

The fourth proportional to 180,668.85, 249,409.68 and 126,999.87 is: 175,320.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,668.85 : 249,409.68 = 126,999.87 : x
  2. Step 2: Convert to fraction form
    180,668.85/249,409.68 = 126,999.87/x
  3. Step 3: Cross multiply
    180,668.85x = 249,409.68 × 126,999.87
  4. Step 4: Simplify right side
    180,668.85x = 31,674,996,936.74
  5. Step 5: Solve for x
    x = 31,674,996,936.74/180,668.85
  6. Step 6: Final answer
    x = 175,320.74

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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.