Home / 131,388.79-181,316.74-74,800.17

Finding the Fourth Proportional to 131,388.79, 181,316.74 and 74,800.17

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Solution

The fourth proportional to 131,388.79, 181,316.74 and 74,800.17 is: 103,224.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,388.79 : 181,316.74 = 74,800.17 : x
  2. Step 2: Convert to fraction form
    131,388.79/181,316.74 = 74,800.17/x
  3. Step 3: Cross multiply
    131,388.79x = 181,316.74 × 74,800.17
  4. Step 4: Simplify right side
    131,388.79x = 13,562,522,975.85
  5. Step 5: Solve for x
    x = 13,562,522,975.85/131,388.79
  6. Step 6: Final answer
    x = 103,224.35

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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.