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Finding the Fourth Proportional to 101,058.56, 139,385.60 and 74,192.64

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Solution

The fourth proportional to 101,058.56, 139,385.60 and 74,192.64 is: 102,330.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,058.56 : 139,385.60 = 74,192.64 : x
  2. Step 2: Convert to fraction form
    101,058.56/139,385.60 = 74,192.64/x
  3. Step 3: Cross multiply
    101,058.56x = 139,385.60 × 74,192.64
  4. Step 4: Simplify right side
    101,058.56x = 10,341,385,641.98
  5. Step 5: Solve for x
    x = 10,341,385,641.98/101,058.56
  6. Step 6: Final answer
    x = 102,330.63

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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.