Home / 86,381.32-119,135.74-72,530.19

Finding the Fourth Proportional to 86,381.32, 119,135.74 and 72,530.19

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Solution

The fourth proportional to 86,381.32, 119,135.74 and 72,530.19 is: 100,032.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,381.32 : 119,135.74 = 72,530.19 : x
  2. Step 2: Convert to fraction form
    86,381.32/119,135.74 = 72,530.19/x
  3. Step 3: Cross multiply
    86,381.32x = 119,135.74 × 72,530.19
  4. Step 4: Simplify right side
    86,381.32x = 8,640,937,857.99
  5. Step 5: Solve for x
    x = 8,640,937,857.99/86,381.32
  6. Step 6: Final answer
    x = 100,032.48

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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.