Home / 147,652,042.80-221,478,064.20-78,777,289.20

Finding the Fourth Proportional to 147,652,042.80, 221,478,064.20 and 78,777,289.20

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Solution

The fourth proportional to 147,652,042.80, 221,478,064.20 and 78,777,289.20 is: 118,165,933.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,652,042.80 : 221,478,064.20 = 78,777,289.20 : x
  2. Step 2: Convert to fraction form
    147,652,042.80/221,478,064.20 = 78,777,289.20/x
  3. Step 3: Cross multiply
    147,652,042.80x = 221,478,064.20 × 78,777,289.20
  4. Step 4: Simplify right side
    147,652,042.80x = 17,447,441,514,939,566
  5. Step 5: Solve for x
    x = 17,447,441,514,939,566/147,652,042.80
  6. Step 6: Final answer
    x = 118,165,933.80

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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.