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Finding the Fourth Proportional to 118,472.45, 163,492.31 and 70,724.78

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Solution

The fourth proportional to 118,472.45, 163,492.31 and 70,724.78 is: 97,600.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,472.45 : 163,492.31 = 70,724.78 : x
  2. Step 2: Convert to fraction form
    118,472.45/163,492.31 = 70,724.78/x
  3. Step 3: Cross multiply
    118,472.45x = 163,492.31 × 70,724.78
  4. Step 4: Simplify right side
    118,472.45x = 11,562,957,015.79
  5. Step 5: Solve for x
    x = 11,562,957,015.79/118,472.45
  6. Step 6: Final answer
    x = 97,600.39

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1.5x scale

Why These Related Problems?

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