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Finding the Fourth Proportional to 101,358.18, 139,873.32 and 56,037.28

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Solution

The fourth proportional to 101,358.18, 139,873.32 and 56,037.28 is: 77,330.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,358.18 : 139,873.32 = 56,037.28 : x
  2. Step 2: Convert to fraction form
    101,358.18/139,873.32 = 56,037.28/x
  3. Step 3: Cross multiply
    101,358.18x = 139,873.32 × 56,037.28
  4. Step 4: Simplify right side
    101,358.18x = 7,838,120,397.37
  5. Step 5: Solve for x
    x = 7,838,120,397.37/101,358.18
  6. Step 6: Final answer
    x = 77,330.91

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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.