Home / 145,088.20-200,218.62-81,446.68

Finding the Fourth Proportional to 145,088.20, 200,218.62 and 81,446.68

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Solution

The fourth proportional to 145,088.20, 200,218.62 and 81,446.68 is: 112,394.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,088.20 : 200,218.62 = 81,446.68 : x
  2. Step 2: Convert to fraction form
    145,088.20/200,218.62 = 81,446.68/x
  3. Step 3: Cross multiply
    145,088.20x = 200,218.62 × 81,446.68
  4. Step 4: Simplify right side
    145,088.20x = 16,307,141,873.18
  5. Step 5: Solve for x
    x = 16,307,141,873.18/145,088.20
  6. Step 6: Final answer
    x = 112,394.68

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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.