Home / 129,586.98-178,828.66-72,998.22

Finding the Fourth Proportional to 129,586.98, 178,828.66 and 72,998.22

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Solution

The fourth proportional to 129,586.98, 178,828.66 and 72,998.22 is: 100,736.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,586.98 : 178,828.66 = 72,998.22 : x
  2. Step 2: Convert to fraction form
    129,586.98/178,828.66 = 72,998.22/x
  3. Step 3: Cross multiply
    129,586.98x = 178,828.66 × 72,998.22
  4. Step 4: Simplify right side
    129,586.98x = 13,054,173,864.99
  5. Step 5: Solve for x
    x = 13,054,173,864.99/129,586.98
  6. Step 6: Final answer
    x = 100,736.77

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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.