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Finding the Fourth Proportional to 101,106.48, 139,527.54 and 55,783.74

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Solution

The fourth proportional to 101,106.48, 139,527.54 and 55,783.74 is: 76,981.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,106.48 : 139,527.54 = 55,783.74 : x
  2. Step 2: Convert to fraction form
    101,106.48/139,527.54 = 55,783.74/x
  3. Step 3: Cross multiply
    101,106.48x = 139,527.54 × 55,783.74
  4. Step 4: Simplify right side
    101,106.48x = 7,783,368,014.20
  5. Step 5: Solve for x
    x = 7,783,368,014.20/101,106.48
  6. Step 6: Final answer
    x = 76,981.89

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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.