Home / 99,640,007.30-149,460,010.95-72,430,228.10

Finding the Fourth Proportional to 99,640,007.30, 149,460,010.95 and 72,430,228.10

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Solution

The fourth proportional to 99,640,007.30, 149,460,010.95 and 72,430,228.10 is: 108,645,342.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,640,007.30 : 149,460,010.95 = 72,430,228.10 : x
  2. Step 2: Convert to fraction form
    99,640,007.30/149,460,010.95 = 72,430,228.10/x
  3. Step 3: Cross multiply
    99,640,007.30x = 149,460,010.95 × 72,430,228.10
  4. Step 4: Simplify right side
    99,640,007.30x = 10,825,422,684,936,996
  5. Step 5: Solve for x
    x = 10,825,422,684,936,996/99,640,007.30
  6. Step 6: Final answer
    x = 108,645,342.15

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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.