Home / 102,879,156.15-142,091,065.80-67,753,978.77

Finding the Fourth Proportional to 102,879,156.15, 142,091,065.80 and 67,753,978.77

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Solution

The fourth proportional to 102,879,156.15, 142,091,065.80 and 67,753,978.77 is: 93,578,091.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,879,156.15 : 142,091,065.80 = 67,753,978.77 : x
  2. Step 2: Convert to fraction form
    102,879,156.15/142,091,065.80 = 67,753,978.77/x
  3. Step 3: Cross multiply
    102,879,156.15x = 142,091,065.80 × 67,753,978.77
  4. Step 4: Simplify right side
    102,879,156.15x = 9,627,235,055,619,874
  5. Step 5: Solve for x
    x = 9,627,235,055,619,874/102,879,156.15
  6. Step 6: Final answer
    x = 93,578,091.19

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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.