Home / 113,189.87-156,179.95-64,806.55

Finding the Fourth Proportional to 113,189.87, 156,179.95 and 64,806.55

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Solution

The fourth proportional to 113,189.87, 156,179.95 and 64,806.55 is: 89,420.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,189.87 : 156,179.95 = 64,806.55 : x
  2. Step 2: Convert to fraction form
    113,189.87/156,179.95 = 64,806.55/x
  3. Step 3: Cross multiply
    113,189.87x = 156,179.95 × 64,806.55
  4. Step 4: Simplify right side
    113,189.87x = 10,121,483,186.21
  5. Step 5: Solve for x
    x = 10,121,483,186.21/113,189.87
  6. Step 6: Final answer
    x = 89,420.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.