Home / 144,518,384.52-199,435,589.82-78,438,906.95

Finding the Fourth Proportional to 144,518,384.52, 199,435,589.82 and 78,438,906.95

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Solution

The fourth proportional to 144,518,384.52, 199,435,589.82 and 78,438,906.95 is: 108,245,810.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,518,384.52 : 199,435,589.82 = 78,438,906.95 : x
  2. Step 2: Convert to fraction form
    144,518,384.52/199,435,589.82 = 78,438,906.95/x
  3. Step 3: Cross multiply
    144,518,384.52x = 199,435,589.82 × 78,438,906.95
  4. Step 4: Simplify right side
    144,518,384.52x = 15,643,509,671,412,168
  5. Step 5: Solve for x
    x = 15,643,509,671,412,168/144,518,384.52
  6. Step 6: Final answer
    x = 108,245,810.55

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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.