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Finding the Fourth Proportional to 213,913.99, 295,108.62 and 128,983.87

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Solution

The fourth proportional to 213,913.99, 295,108.62 and 128,983.87 is: 177,941.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,913.99 : 295,108.62 = 128,983.87 : x
  2. Step 2: Convert to fraction form
    213,913.99/295,108.62 = 128,983.87/x
  3. Step 3: Cross multiply
    213,913.99x = 295,108.62 × 128,983.87
  4. Step 4: Simplify right side
    213,913.99x = 38,064,250,656.50
  5. Step 5: Solve for x
    x = 38,064,250,656.50/213,913.99
  6. Step 6: Final answer
    x = 177,941.85

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.