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Finding the Fourth Proportional to 101,007.19, 139,390.89 and 55,686.83

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Solution

The fourth proportional to 101,007.19, 139,390.89 and 55,686.83 is: 76,848.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,007.19 : 139,390.89 = 55,686.83 : x
  2. Step 2: Convert to fraction form
    101,007.19/139,390.89 = 55,686.83/x
  3. Step 3: Cross multiply
    101,007.19x = 139,390.89 × 55,686.83
  4. Step 4: Simplify right side
    101,007.19x = 7,762,236,794.98
  5. Step 5: Solve for x
    x = 7,762,236,794.98/101,007.19
  6. Step 6: Final answer
    x = 76,848.36

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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.