Home / 103,456.71-142,783.44-63,161.85

Finding the Fourth Proportional to 103,456.71, 142,783.44 and 63,161.85

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Solution

The fourth proportional to 103,456.71, 142,783.44 and 63,161.85 is: 87,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,456.71 : 142,783.44 = 63,161.85 : x
  2. Step 2: Convert to fraction form
    103,456.71/142,783.44 = 63,161.85/x
  3. Step 3: Cross multiply
    103,456.71x = 142,783.44 × 63,161.85
  4. Step 4: Simplify right side
    103,456.71x = 9,018,466,219.76
  5. Step 5: Solve for x
    x = 9,018,466,219.76/103,456.71
  6. Step 6: Final answer
    x = 87,171.40

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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.