Home / 131,626.86-181,645.08-74,278.32

Finding the Fourth Proportional to 131,626.86, 181,645.08 and 74,278.32

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Solution

The fourth proportional to 131,626.86, 181,645.08 and 74,278.32 is: 102,504.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,626.86 : 181,645.08 = 74,278.32 : x
  2. Step 2: Convert to fraction form
    131,626.86/181,645.08 = 74,278.32/x
  3. Step 3: Cross multiply
    131,626.86x = 181,645.08 × 74,278.32
  4. Step 4: Simplify right side
    131,626.86x = 13,492,291,378.67
  5. Step 5: Solve for x
    x = 13,492,291,378.67/131,626.86
  6. Step 6: Final answer
    x = 102,504.09

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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.