Home / 99,870,256.80-149,805,385.20-28,066,672.80

Finding the Fourth Proportional to 99,870,256.80, 149,805,385.20 and 28,066,672.80

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Solution

The fourth proportional to 99,870,256.80, 149,805,385.20 and 28,066,672.80 is: 42,100,009.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,870,256.80 : 149,805,385.20 = 28,066,672.80 : x
  2. Step 2: Convert to fraction form
    99,870,256.80/149,805,385.20 = 28,066,672.80/x
  3. Step 3: Cross multiply
    99,870,256.80x = 149,805,385.20 × 28,066,672.80
  4. Step 4: Simplify right side
    99,870,256.80x = 4,204,538,730,086,362.50
  5. Step 5: Solve for x
    x = 4,204,538,730,086,362.50/99,870,256.80
  6. Step 6: Final answer
    x = 42,100,009.20

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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.