Home / 131,624.51-181,630.69-77,900.04

Finding the Fourth Proportional to 131,624.51, 181,630.69 and 77,900.04

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Solution

The fourth proportional to 131,624.51, 181,630.69 and 77,900.04 is: 107,495.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,624.51 : 181,630.69 = 77,900.04 : x
  2. Step 2: Convert to fraction form
    131,624.51/181,630.69 = 77,900.04/x
  3. Step 3: Cross multiply
    131,624.51x = 181,630.69 × 77,900.04
  4. Step 4: Simplify right side
    131,624.51x = 14,149,037,821.48
  5. Step 5: Solve for x
    x = 14,149,037,821.48/131,624.51
  6. Step 6: Final answer
    x = 107,495.47

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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.