Home / 145,110.03-200,240.84-81,435.53

Finding the Fourth Proportional to 145,110.03, 200,240.84 and 81,435.53

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Solution

The fourth proportional to 145,110.03, 200,240.84 and 81,435.53 is: 112,374.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,110.03 : 200,240.84 = 81,435.53 : x
  2. Step 2: Convert to fraction form
    145,110.03/200,240.84 = 81,435.53/x
  3. Step 3: Cross multiply
    145,110.03x = 200,240.84 × 81,435.53
  4. Step 4: Simplify right side
    145,110.03x = 16,306,717,524.66
  5. Step 5: Solve for x
    x = 16,306,717,524.66/145,110.03
  6. Step 6: Final answer
    x = 112,374.85

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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.