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Finding the Fourth Proportional to 145,303.85, 200,535.53 and 87,974.75

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Solution

The fourth proportional to 145,303.85, 200,535.53 and 87,974.75 is: 121,414.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,303.85 : 200,535.53 = 87,974.75 : x
  2. Step 2: Convert to fraction form
    145,303.85/200,535.53 = 87,974.75/x
  3. Step 3: Cross multiply
    145,303.85x = 200,535.53 × 87,974.75
  4. Step 4: Simplify right side
    145,303.85x = 17,642,063,117.87
  5. Step 5: Solve for x
    x = 17,642,063,117.87/145,303.85
  6. Step 6: Final answer
    x = 121,414.97

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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.