Home / 139,739,442.81-192,841,221.63-81,036,962.03

Finding the Fourth Proportional to 139,739,442.81, 192,841,221.63 and 81,036,962.03

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Solution

The fourth proportional to 139,739,442.81, 192,841,221.63 and 81,036,962.03 is: 111,831,466.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,739,442.81 : 192,841,221.63 = 81,036,962.03 : x
  2. Step 2: Convert to fraction form
    139,739,442.81/192,841,221.63 = 81,036,962.03/x
  3. Step 3: Cross multiply
    139,739,442.81x = 192,841,221.63 × 81,036,962.03
  4. Step 4: Simplify right side
    139,739,442.81x = 15,627,266,754,084,920
  5. Step 5: Solve for x
    x = 15,627,266,754,084,920/139,739,442.81
  6. Step 6: Final answer
    x = 111,831,466.05

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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.