Home / 99,640,020.80-149,460,031.20-72,430,241.60

Finding the Fourth Proportional to 99,640,020.80, 149,460,031.20 and 72,430,241.60

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Solution

The fourth proportional to 99,640,020.80, 149,460,031.20 and 72,430,241.60 is: 108,645,362.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,640,020.80 : 149,460,031.20 = 72,430,241.60 : x
  2. Step 2: Convert to fraction form
    99,640,020.80/149,460,031.20 = 72,430,241.60/x
  3. Step 3: Cross multiply
    99,640,020.80x = 149,460,031.20 × 72,430,241.60
  4. Step 4: Simplify right side
    99,640,020.80x = 10,825,426,169,359,536
  5. Step 5: Solve for x
    x = 10,825,426,169,359,536/99,640,020.80
  6. Step 6: Final answer
    x = 108,645,362.40

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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.