Home / 139,968,140.30-209,952,210.45-71,817,721.10

Finding the Fourth Proportional to 139,968,140.30, 209,952,210.45 and 71,817,721.10

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Solution

The fourth proportional to 139,968,140.30, 209,952,210.45 and 71,817,721.10 is: 107,726,581.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,140.30 : 209,952,210.45 = 71,817,721.10 : x
  2. Step 2: Convert to fraction form
    139,968,140.30/209,952,210.45 = 71,817,721.10/x
  3. Step 3: Cross multiply
    139,968,140.30x = 209,952,210.45 × 71,817,721.10
  4. Step 4: Simplify right side
    139,968,140.30x = 15,078,289,294,426,604
  5. Step 5: Solve for x
    x = 15,078,289,294,426,604/139,968,140.30
  6. Step 6: Final answer
    x = 107,726,581.65

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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.