Home / 137,648,423.14-189,959,836.43-74,921,491.64

Finding the Fourth Proportional to 137,648,423.14, 189,959,836.43 and 74,921,491.64

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Solution

The fourth proportional to 137,648,423.14, 189,959,836.43 and 74,921,491.64 is: 103,394,386.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,648,423.14 : 189,959,836.43 = 74,921,491.64 : x
  2. Step 2: Convert to fraction form
    137,648,423.14/189,959,836.43 = 74,921,491.64/x
  3. Step 3: Cross multiply
    137,648,423.14x = 189,959,836.43 × 74,921,491.64
  4. Step 4: Simplify right side
    137,648,423.14x = 14,232,074,297,688,216
  5. Step 5: Solve for x
    x = 14,232,074,297,688,216/137,648,423.14
  6. Step 6: Final answer
    x = 103,394,386.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.