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Finding the Fourth Proportional to 139,582,937.85, 209,277,448.84 and 61,817,465.49

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Solution

The fourth proportional to 139,582,937.85, 209,277,448.84 and 61,817,465.49 is: 92,683,258.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,582,937.85 : 209,277,448.84 = 61,817,465.49 : x
  2. Step 2: Convert to fraction form
    139,582,937.85/209,277,448.84 = 61,817,465.49/x
  3. Step 3: Cross multiply
    139,582,937.85x = 209,277,448.84 × 61,817,465.49
  4. Step 4: Simplify right side
    139,582,937.85x = 12,937,001,471,501,942
  5. Step 5: Solve for x
    x = 12,937,001,471,501,942/139,582,937.85
  6. Step 6: Final answer
    x = 92,683,258.22

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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.