Home / 134,420.40-185,489.28-77,835.36

Finding the Fourth Proportional to 134,420.40, 185,489.28 and 77,835.36

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Solution

The fourth proportional to 134,420.40, 185,489.28 and 77,835.36 is: 107,406.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,420.40 : 185,489.28 = 77,835.36 : x
  2. Step 2: Convert to fraction form
    134,420.40/185,489.28 = 77,835.36/x
  3. Step 3: Cross multiply
    134,420.40x = 185,489.28 × 77,835.36
  4. Step 4: Simplify right side
    134,420.40x = 14,437,624,884.94
  5. Step 5: Solve for x
    x = 14,437,624,884.94/134,420.40
  6. Step 6: Final answer
    x = 107,406.50

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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.