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Finding the Fourth Proportional to 107,776.34, 148,720.17 and 66,376.77

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Solution

The fourth proportional to 107,776.34, 148,720.17 and 66,376.77 is: 91,593.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,776.34 : 148,720.17 = 66,376.77 : x
  2. Step 2: Convert to fraction form
    107,776.34/148,720.17 = 66,376.77/x
  3. Step 3: Cross multiply
    107,776.34x = 148,720.17 × 66,376.77
  4. Step 4: Simplify right side
    107,776.34x = 9,871,564,518.45
  5. Step 5: Solve for x
    x = 9,871,564,518.45/107,776.34
  6. Step 6: Final answer
    x = 91,593.06

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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.