Home / 145,109.52-200,260.02-81,447.30

Finding the Fourth Proportional to 145,109.52, 200,260.02 and 81,447.30

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Solution

The fourth proportional to 145,109.52, 200,260.02 and 81,447.30 is: 112,402.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,109.52 : 200,260.02 = 81,447.30 : x
  2. Step 2: Convert to fraction form
    145,109.52/200,260.02 = 81,447.30/x
  3. Step 3: Cross multiply
    145,109.52x = 200,260.02 × 81,447.30
  4. Step 4: Simplify right side
    145,109.52x = 16,310,637,926.95
  5. Step 5: Solve for x
    x = 16,310,637,926.95/145,109.52
  6. Step 6: Final answer
    x = 112,402.26

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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.