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Finding the Fourth Proportional to 118,709.35, 163,834.55 and 67,710.40

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Solution

The fourth proportional to 118,709.35, 163,834.55 and 67,710.40 is: 93,449.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,709.35 : 163,834.55 = 67,710.40 : x
  2. Step 2: Convert to fraction form
    118,709.35/163,834.55 = 67,710.40/x
  3. Step 3: Cross multiply
    118,709.35x = 163,834.55 × 67,710.40
  4. Step 4: Simplify right side
    118,709.35x = 11,093,302,420.10
  5. Step 5: Solve for x
    x = 11,093,302,420.10/118,709.35
  6. Step 6: Final answer
    x = 93,449.27

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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.