Home / 145,623.83-200,960.47-81,961.62

Finding the Fourth Proportional to 145,623.83, 200,960.47 and 81,961.62

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Solution

The fourth proportional to 145,623.83, 200,960.47 and 81,961.62 is: 113,106.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,623.83 : 200,960.47 = 81,961.62 : x
  2. Step 2: Convert to fraction form
    145,623.83/200,960.47 = 81,961.62/x
  3. Step 3: Cross multiply
    145,623.83x = 200,960.47 × 81,961.62
  4. Step 4: Simplify right side
    145,623.83x = 16,471,045,925.90
  5. Step 5: Solve for x
    x = 16,471,045,925.90/145,623.83
  6. Step 6: Final answer
    x = 113,106.81

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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.