Home / 100,556,643.20-150,834,964.80-54,640,140.80

Finding the Fourth Proportional to 100,556,643.20, 150,834,964.80 and 54,640,140.80

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Solution

The fourth proportional to 100,556,643.20, 150,834,964.80 and 54,640,140.80 is: 81,960,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,556,643.20 : 150,834,964.80 = 54,640,140.80 : x
  2. Step 2: Convert to fraction form
    100,556,643.20/150,834,964.80 = 54,640,140.80/x
  3. Step 3: Cross multiply
    100,556,643.20x = 150,834,964.80 × 54,640,140.80
  4. Step 4: Simplify right side
    100,556,643.20x = 8,241,643,714,235,044
  5. Step 5: Solve for x
    x = 8,241,643,714,235,044/100,556,643.20
  6. Step 6: Final answer
    x = 81,960,211.20

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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.