Home / 145,587.83-200,905.79-81,059.72

Finding the Fourth Proportional to 145,587.83, 200,905.79 and 81,059.72

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Solution

The fourth proportional to 145,587.83, 200,905.79 and 81,059.72 is: 111,859.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,587.83 : 200,905.79 = 81,059.72 : x
  2. Step 2: Convert to fraction form
    145,587.83/200,905.79 = 81,059.72/x
  3. Step 3: Cross multiply
    145,587.83x = 200,905.79 × 81,059.72
  4. Step 4: Simplify right side
    145,587.83x = 16,285,365,673.95
  5. Step 5: Solve for x
    x = 16,285,365,673.95/145,587.83
  6. Step 6: Final answer
    x = 111,859.39

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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.