Home / 145,191.75-200,364.63-81,529.59

Finding the Fourth Proportional to 145,191.75, 200,364.63 and 81,529.59

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Solution

The fourth proportional to 145,191.75, 200,364.63 and 81,529.59 is: 112,510.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,191.75 : 200,364.63 = 81,529.59 : x
  2. Step 2: Convert to fraction form
    145,191.75/200,364.63 = 81,529.59/x
  3. Step 3: Cross multiply
    145,191.75x = 200,364.63 × 81,529.59
  4. Step 4: Simplify right side
    145,191.75x = 16,335,646,134.40
  5. Step 5: Solve for x
    x = 16,335,646,134.40/145,191.75
  6. Step 6: Final answer
    x = 112,510.84

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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.