Home / 145,081.19-200,230.85-81,419.00

Finding the Fourth Proportional to 145,081.19, 200,230.85 and 81,419.00

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Solution

The fourth proportional to 145,081.19, 200,230.85 and 81,419.00 is: 112,368.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,081.19 : 200,230.85 = 81,419.00 : x
  2. Step 2: Convert to fraction form
    145,081.19/200,230.85 = 81,419.00/x
  3. Step 3: Cross multiply
    145,081.19x = 200,230.85 × 81,419.00
  4. Step 4: Simplify right side
    145,081.19x = 16,302,594,778.54
  5. Step 5: Solve for x
    x = 16,302,594,778.54/145,081.19
  6. Step 6: Final answer
    x = 112,368.77

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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.