Home / 149,189.85-205,875.63-81,206.91

Finding the Fourth Proportional to 149,189.85, 205,875.63 and 81,206.91

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Solution

The fourth proportional to 149,189.85, 205,875.63 and 81,206.91 is: 112,062.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,189.85 : 205,875.63 = 81,206.91 : x
  2. Step 2: Convert to fraction form
    149,189.85/205,875.63 = 81,206.91/x
  3. Step 3: Cross multiply
    149,189.85x = 205,875.63 × 81,206.91
  4. Step 4: Simplify right side
    149,189.85x = 16,718,523,756.60
  5. Step 5: Solve for x
    x = 16,718,523,756.60/149,189.85
  6. Step 6: Final answer
    x = 112,062.07

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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.