Home / 113,990.04-157,325.39-77,179.56

Finding the Fourth Proportional to 113,990.04, 157,325.39 and 77,179.56

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Solution

The fourth proportional to 113,990.04, 157,325.39 and 77,179.56 is: 106,520.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,990.04 : 157,325.39 = 77,179.56 : x
  2. Step 2: Convert to fraction form
    113,990.04/157,325.39 = 77,179.56/x
  3. Step 3: Cross multiply
    113,990.04x = 157,325.39 × 77,179.56
  4. Step 4: Simplify right side
    113,990.04x = 12,142,304,569.98
  5. Step 5: Solve for x
    x = 12,142,304,569.98/113,990.04
  6. Step 6: Final answer
    x = 106,520.75

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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.