Home / 109,963.60-151,740.70-64,643.50

Finding the Fourth Proportional to 109,963.60, 151,740.70 and 64,643.50

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Solution

The fourth proportional to 109,963.60, 151,740.70 and 64,643.50 is: 89,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,963.60 : 151,740.70 = 64,643.50 : x
  2. Step 2: Convert to fraction form
    109,963.60/151,740.70 = 64,643.50/x
  3. Step 3: Cross multiply
    109,963.60x = 151,740.70 × 64,643.50
  4. Step 4: Simplify right side
    109,963.60x = 9,809,049,940.45
  5. Step 5: Solve for x
    x = 9,809,049,940.45/109,963.60
  6. Step 6: Final answer
    x = 89,202.70

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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.