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Finding the Fourth Proportional to 168,101,509.10, 252,152,263.65 and 65,831,557.10

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Solution

The fourth proportional to 168,101,509.10, 252,152,263.65 and 65,831,557.10 is: 98,747,335.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,101,509.10 : 252,152,263.65 = 65,831,557.10 : x
  2. Step 2: Convert to fraction form
    168,101,509.10/252,152,263.65 = 65,831,557.10/x
  3. Step 3: Cross multiply
    168,101,509.10x = 252,152,263.65 × 65,831,557.10
  4. Step 4: Simplify right side
    168,101,509.10x = 16,599,576,142,369,230
  5. Step 5: Solve for x
    x = 16,599,576,142,369,230/168,101,509.10
  6. Step 6: Final answer
    x = 98,747,335.65

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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.