Home / 129,337.02-178,483.79-71,975.36

Finding the Fourth Proportional to 129,337.02, 178,483.79 and 71,975.36

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Solution

The fourth proportional to 129,337.02, 178,483.79 and 71,975.36 is: 99,325.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,337.02 : 178,483.79 = 71,975.36 : x
  2. Step 2: Convert to fraction form
    129,337.02/178,483.79 = 71,975.36/x
  3. Step 3: Cross multiply
    129,337.02x = 178,483.79 × 71,975.36
  4. Step 4: Simplify right side
    129,337.02x = 12,846,435,039.41
  5. Step 5: Solve for x
    x = 12,846,435,039.41/129,337.02
  6. Step 6: Final answer
    x = 99,325.27

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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.