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Finding the Fourth Proportional to 180,889, 249,626.82 and 100,328.86

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Solution

The fourth proportional to 180,889, 249,626.82 and 100,328.86 is: 138,453.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,889 : 249,626.82 = 100,328.86 : x
  2. Step 2: Convert to fraction form
    180,889/249,626.82 = 100,328.86/x
  3. Step 3: Cross multiply
    180,889x = 249,626.82 × 100,328.86
  4. Step 4: Simplify right side
    180,889x = 25,044,774,276.03
  5. Step 5: Solve for x
    x = 25,044,774,276.03/180,889
  6. Step 6: Final answer
    x = 138,453.83

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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.