Home / 145,429.32-200,710.40-81,765.75

Finding the Fourth Proportional to 145,429.32, 200,710.40 and 81,765.75

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Solution

The fourth proportional to 145,429.32, 200,710.40 and 81,765.75 is: 112,846.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,429.32 : 200,710.40 = 81,765.75 : x
  2. Step 2: Convert to fraction form
    145,429.32/200,710.40 = 81,765.75/x
  3. Step 3: Cross multiply
    145,429.32x = 200,710.40 × 81,765.75
  4. Step 4: Simplify right side
    145,429.32x = 16,411,236,388.80
  5. Step 5: Solve for x
    x = 16,411,236,388.80/145,429.32
  6. Step 6: Final answer
    x = 112,846.82

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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.