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Finding the Fourth Proportional to 152,643.96, 228,669.48 and 85,880.52

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Solution

The fourth proportional to 152,643.96, 228,669.48 and 85,880.52 is: 128,653.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,643.96 : 228,669.48 = 85,880.52 : x
  2. Step 2: Convert to fraction form
    152,643.96/228,669.48 = 85,880.52/x
  3. Step 3: Cross multiply
    152,643.96x = 228,669.48 × 85,880.52
  4. Step 4: Simplify right side
    152,643.96x = 19,638,253,850.53
  5. Step 5: Solve for x
    x = 19,638,253,850.53/152,643.96
  6. Step 6: Final answer
    x = 128,653.99

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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.