Home / 145,267.70-200,488.15-81,617.80

Finding the Fourth Proportional to 145,267.70, 200,488.15 and 81,617.80

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Solution

The fourth proportional to 145,267.70, 200,488.15 and 81,617.80 is: 112,643.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,267.70 : 200,488.15 = 81,617.80 : x
  2. Step 2: Convert to fraction form
    145,267.70/200,488.15 = 81,617.80/x
  3. Step 3: Cross multiply
    145,267.70x = 200,488.15 × 81,617.80
  4. Step 4: Simplify right side
    145,267.70x = 16,363,400,318.54
  5. Step 5: Solve for x
    x = 16,363,400,318.54/145,267.70
  6. Step 6: Final answer
    x = 112,643.08

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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.