Home / 143,361,656.20-215,042,484.30-78,864,401.80

Finding the Fourth Proportional to 143,361,656.20, 215,042,484.30 and 78,864,401.80

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Solution

The fourth proportional to 143,361,656.20, 215,042,484.30 and 78,864,401.80 is: 118,296,602.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,361,656.20 : 215,042,484.30 = 78,864,401.80 : x
  2. Step 2: Convert to fraction form
    143,361,656.20/215,042,484.30 = 78,864,401.80/x
  3. Step 3: Cross multiply
    143,361,656.20x = 215,042,484.30 × 78,864,401.80
  4. Step 4: Simplify right side
    143,361,656.20x = 16,959,196,885,905,392
  5. Step 5: Solve for x
    x = 16,959,196,885,905,392/143,361,656.20
  6. Step 6: Final answer
    x = 118,296,602.70

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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.