Home / 191,728.80-287,265.15-121,526.10

Finding the Fourth Proportional to 191,728.80, 287,265.15 and 121,526.10

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Solution

The fourth proportional to 191,728.80, 287,265.15 and 121,526.10 is: 182,081.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,728.80 : 287,265.15 = 121,526.10 : x
  2. Step 2: Convert to fraction form
    191,728.80/287,265.15 = 121,526.10/x
  3. Step 3: Cross multiply
    191,728.80x = 287,265.15 × 121,526.10
  4. Step 4: Simplify right side
    191,728.80x = 34,910,213,345.42
  5. Step 5: Solve for x
    x = 34,910,213,345.42/191,728.80
  6. Step 6: Final answer
    x = 182,081.22

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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.