Home / 147,442,940.40-221,589,563.40-128,736,217.20

Finding the Fourth Proportional to 147,442,940.40, 221,589,563.40 and 128,736,217.20

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Solution

The fourth proportional to 147,442,940.40, 221,589,563.40 and 128,736,217.20 is: 193,475,537.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,442,940.40 : 221,589,563.40 = 128,736,217.20 : x
  2. Step 2: Convert to fraction form
    147,442,940.40/221,589,563.40 = 128,736,217.20/x
  3. Step 3: Cross multiply
    147,442,940.40x = 221,589,563.40 × 128,736,217.20
  4. Step 4: Simplify right side
    147,442,940.40x = 28,526,602,163,115,572
  5. Step 5: Solve for x
    x = 28,526,602,163,115,572/147,442,940.40
  6. Step 6: Final answer
    x = 193,475,537.63

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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.