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Finding the Fourth Proportional to 134,777.60, 185,983.20 and 78,178.08

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Solution

The fourth proportional to 134,777.60, 185,983.20 and 78,178.08 is: 107,880.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,777.60 : 185,983.20 = 78,178.08 : x
  2. Step 2: Convert to fraction form
    134,777.60/185,983.20 = 78,178.08/x
  3. Step 3: Cross multiply
    134,777.60x = 185,983.20 × 78,178.08
  4. Step 4: Simplify right side
    134,777.60x = 14,539,809,488.26
  5. Step 5: Solve for x
    x = 14,539,809,488.26/134,777.60
  6. Step 6: Final answer
    x = 107,880.01

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.