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Finding the Fourth Proportional to 180,999.82, 249,780.84 and 100,428.91

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Solution

The fourth proportional to 180,999.82, 249,780.84 and 100,428.91 is: 138,592.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,999.82 : 249,780.84 = 100,428.91 : x
  2. Step 2: Convert to fraction form
    180,999.82/249,780.84 = 100,428.91/x
  3. Step 3: Cross multiply
    180,999.82x = 249,780.84 × 100,428.91
  4. Step 4: Simplify right side
    180,999.82x = 25,085,218,186.50
  5. Step 5: Solve for x
    x = 25,085,218,186.50/180,999.82
  6. Step 6: Final answer
    x = 138,592.51

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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.