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Finding the Fourth Proportional to 112,859.55, 155,618.55 and 71,969.13

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Solution

The fourth proportional to 112,859.55, 155,618.55 and 71,969.13 is: 99,236.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,859.55 : 155,618.55 = 71,969.13 : x
  2. Step 2: Convert to fraction form
    112,859.55/155,618.55 = 71,969.13/x
  3. Step 3: Cross multiply
    112,859.55x = 155,618.55 × 71,969.13
  4. Step 4: Simplify right side
    112,859.55x = 11,199,731,655.36
  5. Step 5: Solve for x
    x = 11,199,731,655.36/112,859.55
  6. Step 6: Final answer
    x = 99,236.01

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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.