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Finding the Fourth Proportional to 180,874.52, 249,621.80 and 100,328.07

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Solution

The fourth proportional to 180,874.52, 249,621.80 and 100,328.07 is: 138,461.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,874.52 : 249,621.80 = 100,328.07 : x
  2. Step 2: Convert to fraction form
    180,874.52/249,621.80 = 100,328.07/x
  3. Step 3: Cross multiply
    180,874.52x = 249,621.80 × 100,328.07
  4. Step 4: Simplify right side
    180,874.52x = 25,044,073,423.93
  5. Step 5: Solve for x
    x = 25,044,073,423.93/180,874.52
  6. Step 6: Final answer
    x = 138,461.04

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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.