Home / 191,718.20-287,577.30-120,859.40

Finding the Fourth Proportional to 191,718.20, 287,577.30 and 120,859.40

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Solution

The fourth proportional to 191,718.20, 287,577.30 and 120,859.40 is: 181,289.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,718.20 : 287,577.30 = 120,859.40 : x
  2. Step 2: Convert to fraction form
    191,718.20/287,577.30 = 120,859.40/x
  3. Step 3: Cross multiply
    191,718.20x = 287,577.30 × 120,859.40
  4. Step 4: Simplify right side
    191,718.20x = 34,756,419,931.62
  5. Step 5: Solve for x
    x = 34,756,419,931.62/191,718.20
  6. Step 6: Final answer
    x = 181,289.10

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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.