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Finding the Fourth Proportional to 101,009.13, 139,392.90 and 55,686.08

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Solution

The fourth proportional to 101,009.13, 139,392.90 and 55,686.08 is: 76,846.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,009.13 : 139,392.90 = 55,686.08 : x
  2. Step 2: Convert to fraction form
    101,009.13/139,392.90 = 55,686.08/x
  3. Step 3: Cross multiply
    101,009.13x = 139,392.90 × 55,686.08
  4. Step 4: Simplify right side
    101,009.13x = 7,762,244,529.31
  5. Step 5: Solve for x
    x = 7,762,244,529.31/101,009.13
  6. Step 6: Final answer
    x = 76,846.96

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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.