Home / 103,434.48-142,755.12-63,171.60

Finding the Fourth Proportional to 103,434.48, 142,755.12 and 63,171.60

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Solution

The fourth proportional to 103,434.48, 142,755.12 and 63,171.60 is: 87,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,434.48 : 142,755.12 = 63,171.60 : x
  2. Step 2: Convert to fraction form
    103,434.48/142,755.12 = 63,171.60/x
  3. Step 3: Cross multiply
    103,434.48x = 142,755.12 × 63,171.60
  4. Step 4: Simplify right side
    103,434.48x = 9,018,069,338.59
  5. Step 5: Solve for x
    x = 9,018,069,338.59/103,434.48
  6. Step 6: Final answer
    x = 87,186.30

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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.