Home / 191,515.04-287,403.78-66,856.04

Finding the Fourth Proportional to 191,515.04, 287,403.78 and 66,856.04

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Solution

The fourth proportional to 191,515.04, 287,403.78 and 66,856.04 is: 100,329.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,515.04 : 287,403.78 = 66,856.04 : x
  2. Step 2: Convert to fraction form
    191,515.04/287,403.78 = 66,856.04/x
  3. Step 3: Cross multiply
    191,515.04x = 287,403.78 × 66,856.04
  4. Step 4: Simplify right side
    191,515.04x = 19,214,678,611.83
  5. Step 5: Solve for x
    x = 19,214,678,611.83/191,515.04
  6. Step 6: Final answer
    x = 100,329.87

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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.