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Finding the Fourth Proportional to 180,640.88, 249,312.84 and 109,031.12

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Solution

The fourth proportional to 180,640.88, 249,312.84 and 109,031.12 is: 150,480.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,640.88 : 249,312.84 = 109,031.12 : x
  2. Step 2: Convert to fraction form
    180,640.88/249,312.84 = 109,031.12/x
  3. Step 3: Cross multiply
    180,640.88x = 249,312.84 × 109,031.12
  4. Step 4: Simplify right side
    180,640.88x = 27,182,858,175.58
  5. Step 5: Solve for x
    x = 27,182,858,175.58/180,640.88
  6. Step 6: Final answer
    x = 150,480.10

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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.