Home / 118,394.90-163,336.58-87,424.35

Finding the Fourth Proportional to 118,394.90, 163,336.58 and 87,424.35

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Solution

The fourth proportional to 118,394.90, 163,336.58 and 87,424.35 is: 120,609.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,394.90 : 163,336.58 = 87,424.35 : x
  2. Step 2: Convert to fraction form
    118,394.90/163,336.58 = 87,424.35/x
  3. Step 3: Cross multiply
    118,394.90x = 163,336.58 × 87,424.35
  4. Step 4: Simplify right side
    118,394.90x = 14,279,593,370.05
  5. Step 5: Solve for x
    x = 14,279,593,370.05/118,394.90
  6. Step 6: Final answer
    x = 120,609.87

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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.