Home / 131,623.19-181,639.32-71,193.77

Finding the Fourth Proportional to 131,623.19, 181,639.32 and 71,193.77

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Solution

The fourth proportional to 131,623.19, 181,639.32 and 71,193.77 is: 98,247.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,623.19 : 181,639.32 = 71,193.77 : x
  2. Step 2: Convert to fraction form
    131,623.19/181,639.32 = 71,193.77/x
  3. Step 3: Cross multiply
    131,623.19x = 181,639.32 × 71,193.77
  4. Step 4: Simplify right side
    131,623.19x = 12,931,587,971.04
  5. Step 5: Solve for x
    x = 12,931,587,971.04/131,623.19
  6. Step 6: Final answer
    x = 98,247.03

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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.