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Finding the Fourth Proportional to 101,414.76, 139,784.64 and 76,220.52

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Solution

The fourth proportional to 101,414.76, 139,784.64 and 76,220.52 is: 105,058.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,414.76 : 139,784.64 = 76,220.52 : x
  2. Step 2: Convert to fraction form
    101,414.76/139,784.64 = 76,220.52/x
  3. Step 3: Cross multiply
    101,414.76x = 139,784.64 × 76,220.52
  4. Step 4: Simplify right side
    101,414.76x = 10,654,457,948.81
  5. Step 5: Solve for x
    x = 10,654,457,948.81/101,414.76
  6. Step 6: Final answer
    x = 105,058.26

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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.