Home / 139,968,138.55-209,952,207.83-103,688,432.95

Finding the Fourth Proportional to 139,968,138.55, 209,952,207.83 and 103,688,432.95

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Solution

The fourth proportional to 139,968,138.55, 209,952,207.83 and 103,688,432.95 is: 155,532,649.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,138.55 : 209,952,207.83 = 103,688,432.95 : x
  2. Step 2: Convert to fraction form
    139,968,138.55/209,952,207.83 = 103,688,432.95/x
  3. Step 3: Cross multiply
    139,968,138.55x = 209,952,207.83 × 103,688,432.95
  4. Step 4: Simplify right side
    139,968,138.55x = 21,769,615,424,285,420
  5. Step 5: Solve for x
    x = 21,769,615,424,285,420/139,968,138.55
  6. Step 6: Final answer
    x = 155,532,649.43

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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.