Home / 112,214.79-154,716.35-71,862.21

Finding the Fourth Proportional to 112,214.79, 154,716.35 and 71,862.21

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Solution

The fourth proportional to 112,214.79, 154,716.35 and 71,862.21 is: 99,080.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,214.79 : 154,716.35 = 71,862.21 : x
  2. Step 2: Convert to fraction form
    112,214.79/154,716.35 = 71,862.21/x
  3. Step 3: Cross multiply
    112,214.79x = 154,716.35 × 71,862.21
  4. Step 4: Simplify right side
    112,214.79x = 11,118,258,474.82
  5. Step 5: Solve for x
    x = 11,118,258,474.82/112,214.79
  6. Step 6: Final answer
    x = 99,080.15

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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.