Home / 101,345,990.90-139,973,678.25-66,693,369.38

Finding the Fourth Proportional to 101,345,990.90, 139,973,678.25 and 66,693,369.38

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Solution

The fourth proportional to 101,345,990.90, 139,973,678.25 and 66,693,369.38 is: 92,113,325.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,345,990.90 : 139,973,678.25 = 66,693,369.38 : x
  2. Step 2: Convert to fraction form
    101,345,990.90/139,973,678.25 = 66,693,369.38/x
  3. Step 3: Cross multiply
    101,345,990.90x = 139,973,678.25 × 66,693,369.38
  4. Step 4: Simplify right side
    101,345,990.90x = 9,335,316,227,004,522
  5. Step 5: Solve for x
    x = 9,335,316,227,004,522/101,345,990.90
  6. Step 6: Final answer
    x = 92,113,325.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.