Home / 144,518,435.72-199,435,588.89-78,438,947.60

Finding the Fourth Proportional to 144,518,435.72, 199,435,588.89 and 78,438,947.60

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Solution

The fourth proportional to 144,518,435.72, 199,435,588.89 and 78,438,947.60 is: 108,245,827.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,518,435.72 : 199,435,588.89 = 78,438,947.60 : x
  2. Step 2: Convert to fraction form
    144,518,435.72/199,435,588.89 = 78,438,947.60/x
  3. Step 3: Cross multiply
    144,518,435.72x = 199,435,588.89 × 78,438,947.60
  4. Step 4: Simplify right side
    144,518,435.72x = 15,643,517,707,069,386
  5. Step 5: Solve for x
    x = 15,643,517,707,069,386/144,518,435.72
  6. Step 6: Final answer
    x = 108,245,827.80

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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.