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Finding the Fourth Proportional to 121,511.60, 182,267.40 and 104,890.40

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Solution

The fourth proportional to 121,511.60, 182,267.40 and 104,890.40 is: 157,335.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,511.60 : 182,267.40 = 104,890.40 : x
  2. Step 2: Convert to fraction form
    121,511.60/182,267.40 = 104,890.40/x
  3. Step 3: Cross multiply
    121,511.60x = 182,267.40 × 104,890.40
  4. Step 4: Simplify right side
    121,511.60x = 19,118,100,492.96
  5. Step 5: Solve for x
    x = 19,118,100,492.96/121,511.60
  6. Step 6: Final answer
    x = 157,335.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.