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Finding the Fourth Proportional to 139,093,602.40, 208,631,072.40 and 36,855,445.60

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Solution

The fourth proportional to 139,093,602.40, 208,631,072.40 and 36,855,445.60 is: 55,280,695.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,093,602.40 : 208,631,072.40 = 36,855,445.60 : x
  2. Step 2: Convert to fraction form
    139,093,602.40/208,631,072.40 = 36,855,445.60/x
  3. Step 3: Cross multiply
    139,093,602.40x = 208,631,072.40 × 36,855,445.60
  4. Step 4: Simplify right side
    139,093,602.40x = 7,689,191,139,307,862
  5. Step 5: Solve for x
    x = 7,689,191,139,307,862/139,093,602.40
  6. Step 6: Final answer
    x = 55,280,695.92

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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.