Home / 129,621.75-178,878.02-70,005.75

Finding the Fourth Proportional to 129,621.75, 178,878.02 and 70,005.75

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Solution

The fourth proportional to 129,621.75, 178,878.02 and 70,005.75 is: 96,607.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,621.75 : 178,878.02 = 70,005.75 : x
  2. Step 2: Convert to fraction form
    129,621.75/178,878.02 = 70,005.75/x
  3. Step 3: Cross multiply
    129,621.75x = 178,878.02 × 70,005.75
  4. Step 4: Simplify right side
    129,621.75x = 12,522,489,598.59
  5. Step 5: Solve for x
    x = 12,522,489,598.59/129,621.75
  6. Step 6: Final answer
    x = 96,607.94

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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.