Home / 129,623.76-178,880.84-70,007.76

Finding the Fourth Proportional to 129,623.76, 178,880.84 and 70,007.76

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Solution

The fourth proportional to 129,623.76, 178,880.84 and 70,007.76 is: 96,610.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,623.76 : 178,880.84 = 70,007.76 : x
  2. Step 2: Convert to fraction form
    129,623.76/178,880.84 = 70,007.76/x
  3. Step 3: Cross multiply
    129,623.76x = 178,880.84 × 70,007.76
  4. Step 4: Simplify right side
    129,623.76x = 12,523,046,915.32
  5. Step 5: Solve for x
    x = 12,523,046,915.32/129,623.76
  6. Step 6: Final answer
    x = 96,610.74

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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.