Home / 109,152,505.80-163,728,758.70-72,642,509.10

Finding the Fourth Proportional to 109,152,505.80, 163,728,758.70 and 72,642,509.10

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Solution

The fourth proportional to 109,152,505.80, 163,728,758.70 and 72,642,509.10 is: 108,963,763.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,152,505.80 : 163,728,758.70 = 72,642,509.10 : x
  2. Step 2: Convert to fraction form
    109,152,505.80/163,728,758.70 = 72,642,509.10/x
  3. Step 3: Cross multiply
    109,152,505.80x = 163,728,758.70 × 72,642,509.10
  4. Step 4: Simplify right side
    109,152,505.80x = 11,893,667,843,796,452
  5. Step 5: Solve for x
    x = 11,893,667,843,796,452/109,152,505.80
  6. Step 6: Final answer
    x = 108,963,763.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.