Home / 145,026.86-200,136.22-81,364.50

Finding the Fourth Proportional to 145,026.86, 200,136.22 and 81,364.50

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Solution

The fourth proportional to 145,026.86, 200,136.22 and 81,364.50 is: 112,282.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,026.86 : 200,136.22 = 81,364.50 : x
  2. Step 2: Convert to fraction form
    145,026.86/200,136.22 = 81,364.50/x
  3. Step 3: Cross multiply
    145,026.86x = 200,136.22 × 81,364.50
  4. Step 4: Simplify right side
    145,026.86x = 16,283,983,268.78
  5. Step 5: Solve for x
    x = 16,283,983,268.78/145,026.86
  6. Step 6: Final answer
    x = 112,282.54

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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.