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Finding the Fourth Proportional to 112,650.99, 155,388.35 and 69,643.63

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Solution

The fourth proportional to 112,650.99, 155,388.35 and 69,643.63 is: 96,064.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,650.99 : 155,388.35 = 69,643.63 : x
  2. Step 2: Convert to fraction form
    112,650.99/155,388.35 = 69,643.63/x
  3. Step 3: Cross multiply
    112,650.99x = 155,388.35 × 69,643.63
  4. Step 4: Simplify right side
    112,650.99x = 10,821,809,316.29
  5. Step 5: Solve for x
    x = 10,821,809,316.29/112,650.99
  6. Step 6: Final answer
    x = 96,064.93

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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.