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Finding the Fourth Proportional to 139,802.76, 209,657.57 and 45,010.76

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Solution

The fourth proportional to 139,802.76, 209,657.57 and 45,010.76 is: 67,501.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,802.76 : 209,657.57 = 45,010.76 : x
  2. Step 2: Convert to fraction form
    139,802.76/209,657.57 = 45,010.76/x
  3. Step 3: Cross multiply
    139,802.76x = 209,657.57 × 45,010.76
  4. Step 4: Simplify right side
    139,802.76x = 9,436,845,292.11
  5. Step 5: Solve for x
    x = 9,436,845,292.11/139,802.76
  6. Step 6: Final answer
    x = 67,501.14

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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.