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Finding the Fourth Proportional to 109,402.30, 164,038.65 and 56,914.30

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Solution

The fourth proportional to 109,402.30, 164,038.65 and 56,914.30 is: 85,337.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,402.30 : 164,038.65 = 56,914.30 : x
  2. Step 2: Convert to fraction form
    109,402.30/164,038.65 = 56,914.30/x
  3. Step 3: Cross multiply
    109,402.30x = 164,038.65 × 56,914.30
  4. Step 4: Simplify right side
    109,402.30x = 9,336,144,937.70
  5. Step 5: Solve for x
    x = 9,336,144,937.70/109,402.30
  6. Step 6: Final answer
    x = 85,337.74

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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.