Home / 145,155.66-200,309.67-81,496.14

Finding the Fourth Proportional to 145,155.66, 200,309.67 and 81,496.14

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Solution

The fourth proportional to 145,155.66, 200,309.67 and 81,496.14 is: 112,461.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,155.66 : 200,309.67 = 81,496.14 : x
  2. Step 2: Convert to fraction form
    145,155.66/200,309.67 = 81,496.14/x
  3. Step 3: Cross multiply
    145,155.66x = 200,309.67 × 81,496.14
  4. Step 4: Simplify right side
    145,155.66x = 16,324,464,909.67
  5. Step 5: Solve for x
    x = 16,324,464,909.67/145,155.66
  6. Step 6: Final answer
    x = 112,461.79

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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.