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Finding the Fourth Proportional to 139,461.66, 209,194.80 and 73,031.52

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Solution

The fourth proportional to 139,461.66, 209,194.80 and 73,031.52 is: 109,548.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,461.66 : 209,194.80 = 73,031.52 : x
  2. Step 2: Convert to fraction form
    139,461.66/209,194.80 = 73,031.52/x
  3. Step 3: Cross multiply
    139,461.66x = 209,194.80 × 73,031.52
  4. Step 4: Simplify right side
    139,461.66x = 15,277,814,220.10
  5. Step 5: Solve for x
    x = 15,277,814,220.10/139,461.66
  6. Step 6: Final answer
    x = 109,548.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.