Home / 191,531.40-287,297.10-66,856.20

Finding the Fourth Proportional to 191,531.40, 287,297.10 and 66,856.20

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Solution

The fourth proportional to 191,531.40, 287,297.10 and 66,856.20 is: 100,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,531.40 : 287,297.10 = 66,856.20 : x
  2. Step 2: Convert to fraction form
    191,531.40/287,297.10 = 66,856.20/x
  3. Step 3: Cross multiply
    191,531.40x = 287,297.10 × 66,856.20
  4. Step 4: Simplify right side
    191,531.40x = 19,207,592,377.02
  5. Step 5: Solve for x
    x = 19,207,592,377.02/191,531.40
  6. Step 6: Final answer
    x = 100,284.30

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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.