Home / 129,702.32-178,989.08-70,086.32

Finding the Fourth Proportional to 129,702.32, 178,989.08 and 70,086.32

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Solution

The fourth proportional to 129,702.32, 178,989.08 and 70,086.32 is: 96,719.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,702.32 : 178,989.08 = 70,086.32 : x
  2. Step 2: Convert to fraction form
    129,702.32/178,989.08 = 70,086.32/x
  3. Step 3: Cross multiply
    129,702.32x = 178,989.08 × 70,086.32
  4. Step 4: Simplify right side
    129,702.32x = 12,544,685,937.39
  5. Step 5: Solve for x
    x = 12,544,685,937.39/129,702.32
  6. Step 6: Final answer
    x = 96,719.06

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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.