Home / 144,511,681.06-199,426,312.40-78,432,179.35

Finding the Fourth Proportional to 144,511,681.06, 199,426,312.40 and 78,432,179.35

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Solution

The fourth proportional to 144,511,681.06, 199,426,312.40 and 78,432,179.35 is: 108,236,511.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,511,681.06 : 199,426,312.40 = 78,432,179.35 : x
  2. Step 2: Convert to fraction form
    144,511,681.06/199,426,312.40 = 78,432,179.35/x
  3. Step 3: Cross multiply
    144,511,681.06x = 199,426,312.40 × 78,432,179.35
  4. Step 4: Simplify right side
    144,511,681.06x = 15,641,440,300,322,000
  5. Step 5: Solve for x
    x = 15,641,440,300,322,000/144,511,681.06
  6. Step 6: Final answer
    x = 108,236,511.99

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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.