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Finding the Fourth Proportional to 164,492.70, 247,030.65 and 127,143.60

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Solution

The fourth proportional to 164,492.70, 247,030.65 and 127,143.60 is: 190,940.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,492.70 : 247,030.65 = 127,143.60 : x
  2. Step 2: Convert to fraction form
    164,492.70/247,030.65 = 127,143.60/x
  3. Step 3: Cross multiply
    164,492.70x = 247,030.65 × 127,143.60
  4. Step 4: Simplify right side
    164,492.70x = 31,408,366,151.34
  5. Step 5: Solve for x
    x = 31,408,366,151.34/164,492.70
  6. Step 6: Final answer
    x = 190,940.79

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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.