Home / 139,968,005.30-209,952,007.95-103,688,299.70

Finding the Fourth Proportional to 139,968,005.30, 209,952,007.95 and 103,688,299.70

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Solution

The fourth proportional to 139,968,005.30, 209,952,007.95 and 103,688,299.70 is: 155,532,449.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,005.30 : 209,952,007.95 = 103,688,299.70 : x
  2. Step 2: Convert to fraction form
    139,968,005.30/209,952,007.95 = 103,688,299.70/x
  3. Step 3: Cross multiply
    139,968,005.30x = 209,952,007.95 × 103,688,299.70
  4. Step 4: Simplify right side
    139,968,005.30x = 21,769,566,722,936,384
  5. Step 5: Solve for x
    x = 21,769,566,722,936,384/139,968,005.30
  6. Step 6: Final answer
    x = 155,532,449.55

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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.