Home / 129,533.16-178,759.26-72,946.56

Finding the Fourth Proportional to 129,533.16, 178,759.26 and 72,946.56

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Solution

The fourth proportional to 129,533.16, 178,759.26 and 72,946.56 is: 100,668.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,533.16 : 178,759.26 = 72,946.56 : x
  2. Step 2: Convert to fraction form
    129,533.16/178,759.26 = 72,946.56/x
  3. Step 3: Cross multiply
    129,533.16x = 178,759.26 × 72,946.56
  4. Step 4: Simplify right side
    129,533.16x = 13,039,873,085.15
  5. Step 5: Solve for x
    x = 13,039,873,085.15/129,533.16
  6. Step 6: Final answer
    x = 100,668.22

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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.