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Finding the Fourth Proportional to 144,838.59, 217,317.90 and 78,200.39

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Solution

The fourth proportional to 144,838.59, 217,317.90 and 78,200.39 is: 117,332.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,838.59 : 217,317.90 = 78,200.39 : x
  2. Step 2: Convert to fraction form
    144,838.59/217,317.90 = 78,200.39/x
  3. Step 3: Cross multiply
    144,838.59x = 217,317.90 × 78,200.39
  4. Step 4: Simplify right side
    144,838.59x = 16,994,343,447.39
  5. Step 5: Solve for x
    x = 16,994,343,447.39/144,838.59
  6. Step 6: Final answer
    x = 117,332.98

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1.5x scale

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.