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Finding the Fourth Proportional to 139,889,433.40, 209,834,150.10 and 88,997,068.60

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Solution

The fourth proportional to 139,889,433.40, 209,834,150.10 and 88,997,068.60 is: 133,495,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,889,433.40 : 209,834,150.10 = 88,997,068.60 : x
  2. Step 2: Convert to fraction form
    139,889,433.40/209,834,150.10 = 88,997,068.60/x
  3. Step 3: Cross multiply
    139,889,433.40x = 209,834,150.10 × 88,997,068.60
  4. Step 4: Simplify right side
    139,889,433.40x = 18,674,624,251,072,396
  5. Step 5: Solve for x
    x = 18,674,624,251,072,396/139,889,433.40
  6. Step 6: Final answer
    x = 133,495,602.90

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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.