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Finding the Fourth Proportional to 101,234.32, 139,475.46 and 70,578.52

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Solution

The fourth proportional to 101,234.32, 139,475.46 and 70,578.52 is: 97,239.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,234.32 : 139,475.46 = 70,578.52 : x
  2. Step 2: Convert to fraction form
    101,234.32/139,475.46 = 70,578.52/x
  3. Step 3: Cross multiply
    101,234.32x = 139,475.46 × 70,578.52
  4. Step 4: Simplify right side
    101,234.32x = 9,843,971,543.12
  5. Step 5: Solve for x
    x = 9,843,971,543.12/101,234.32
  6. Step 6: Final answer
    x = 97,239.47

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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.