Home / 163,905.20-245,934.60-85,108.40

Finding the Fourth Proportional to 163,905.20, 245,934.60 and 85,108.40

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Solution

The fourth proportional to 163,905.20, 245,934.60 and 85,108.40 is: 127,702.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,905.20 : 245,934.60 = 85,108.40 : x
  2. Step 2: Convert to fraction form
    163,905.20/245,934.60 = 85,108.40/x
  3. Step 3: Cross multiply
    163,905.20x = 245,934.60 × 85,108.40
  4. Step 4: Simplify right side
    163,905.20x = 20,931,100,310.64
  5. Step 5: Solve for x
    x = 20,931,100,310.64/163,905.20
  6. Step 6: Final answer
    x = 127,702.48

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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.