Home / 129,392.01-178,559.15-72,803.25

Finding the Fourth Proportional to 129,392.01, 178,559.15 and 72,803.25

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Solution

The fourth proportional to 129,392.01, 178,559.15 and 72,803.25 is: 100,467.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,392.01 : 178,559.15 = 72,803.25 : x
  2. Step 2: Convert to fraction form
    129,392.01/178,559.15 = 72,803.25/x
  3. Step 3: Cross multiply
    129,392.01x = 178,559.15 × 72,803.25
  4. Step 4: Simplify right side
    129,392.01x = 12,999,686,073.22
  5. Step 5: Solve for x
    x = 12,999,686,073.22/129,392.01
  6. Step 6: Final answer
    x = 100,467.46

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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.