Home / 124,420,013.40-186,630,020.10-78,734,458.20

Finding the Fourth Proportional to 124,420,013.40, 186,630,020.10 and 78,734,458.20

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Solution

The fourth proportional to 124,420,013.40, 186,630,020.10 and 78,734,458.20 is: 118,101,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,420,013.40 : 186,630,020.10 = 78,734,458.20 : x
  2. Step 2: Convert to fraction form
    124,420,013.40/186,630,020.10 = 78,734,458.20/x
  3. Step 3: Cross multiply
    124,420,013.40x = 186,630,020.10 × 78,734,458.20
  4. Step 4: Simplify right side
    124,420,013.40x = 14,694,213,516,428,610
  5. Step 5: Solve for x
    x = 14,694,213,516,428,610/124,420,013.40
  6. Step 6: Final answer
    x = 118,101,687.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.