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Finding the Fourth Proportional to 156,978.40, 235,462.40 and 68,232.02

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Solution

The fourth proportional to 156,978.40, 235,462.40 and 68,232.02 is: 102,345.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,978.40 : 235,462.40 = 68,232.02 : x
  2. Step 2: Convert to fraction form
    156,978.40/235,462.40 = 68,232.02/x
  3. Step 3: Cross multiply
    156,978.40x = 235,462.40 × 68,232.02
  4. Step 4: Simplify right side
    156,978.40x = 16,066,075,186.05
  5. Step 5: Solve for x
    x = 16,066,075,186.05/156,978.40
  6. Step 6: Final answer
    x = 102,345.77

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.