Home / 145,542.10-200,833.81-81,878.53

Finding the Fourth Proportional to 145,542.10, 200,833.81 and 81,878.53

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Solution

The fourth proportional to 145,542.10, 200,833.81 and 81,878.53 is: 112,984.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,542.10 : 200,833.81 = 81,878.53 : x
  2. Step 2: Convert to fraction form
    145,542.10/200,833.81 = 81,878.53/x
  3. Step 3: Cross multiply
    145,542.10x = 200,833.81 × 81,878.53
  4. Step 4: Simplify right side
    145,542.10x = 16,443,977,137.10
  5. Step 5: Solve for x
    x = 16,443,977,137.10/145,542.10
  6. Step 6: Final answer
    x = 112,984.33

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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.