Home / 144,511,681.25-199,426,312.66-78,432,179.53

Finding the Fourth Proportional to 144,511,681.25, 199,426,312.66 and 78,432,179.53

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Solution

The fourth proportional to 144,511,681.25, 199,426,312.66 and 78,432,179.53 is: 108,236,512.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,511,681.25 : 199,426,312.66 = 78,432,179.53 : x
  2. Step 2: Convert to fraction form
    144,511,681.25/199,426,312.66 = 78,432,179.53/x
  3. Step 3: Cross multiply
    144,511,681.25x = 199,426,312.66 × 78,432,179.53
  4. Step 4: Simplify right side
    144,511,681.25x = 15,641,440,357,555,032
  5. Step 5: Solve for x
    x = 15,641,440,357,555,032/144,511,681.25
  6. Step 6: Final answer
    x = 108,236,512.25

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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.