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Finding the Fourth Proportional to 180,946.80, 249,707.80 and 100,372.72

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Solution

The fourth proportional to 180,946.80, 249,707.80 and 100,372.72 is: 138,515.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,946.80 : 249,707.80 = 100,372.72 : x
  2. Step 2: Convert to fraction form
    180,946.80/249,707.80 = 100,372.72/x
  3. Step 3: Cross multiply
    180,946.80x = 249,707.80 × 100,372.72
  4. Step 4: Simplify right side
    180,946.80x = 25,063,851,091.22
  5. Step 5: Solve for x
    x = 25,063,851,091.22/180,946.80
  6. Step 6: Final answer
    x = 138,515.03

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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.