Home / 99,856.60-149,784.90-89,834.20

Finding the Fourth Proportional to 99,856.60, 149,784.90 and 89,834.20

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Solution

The fourth proportional to 99,856.60, 149,784.90 and 89,834.20 is: 134,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,856.60 : 149,784.90 = 89,834.20 : x
  2. Step 2: Convert to fraction form
    99,856.60/149,784.90 = 89,834.20/x
  3. Step 3: Cross multiply
    99,856.60x = 149,784.90 × 89,834.20
  4. Step 4: Simplify right side
    99,856.60x = 13,455,806,663.58
  5. Step 5: Solve for x
    x = 13,455,806,663.58/99,856.60
  6. Step 6: Final answer
    x = 134,751.30

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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.