Home / 191,385.48-287,078.40-91,522.20

Finding the Fourth Proportional to 191,385.48, 287,078.40 and 91,522.20

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Solution

The fourth proportional to 191,385.48, 287,078.40 and 91,522.20 is: 137,283.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,385.48 : 287,078.40 = 91,522.20 : x
  2. Step 2: Convert to fraction form
    191,385.48/287,078.40 = 91,522.20/x
  3. Step 3: Cross multiply
    191,385.48x = 287,078.40 × 91,522.20
  4. Step 4: Simplify right side
    191,385.48x = 26,274,046,740.48
  5. Step 5: Solve for x
    x = 26,274,046,740.48/191,385.48
  6. Step 6: Final answer
    x = 137,283.39

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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.