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Finding the Fourth Proportional to 112,496.68, 155,276.22 and 70,030

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Solution

The fourth proportional to 112,496.68, 155,276.22 and 70,030 is: 96,660.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,496.68 : 155,276.22 = 70,030 : x
  2. Step 2: Convert to fraction form
    112,496.68/155,276.22 = 70,030/x
  3. Step 3: Cross multiply
    112,496.68x = 155,276.22 × 70,030
  4. Step 4: Simplify right side
    112,496.68x = 10,873,993,686.60
  5. Step 5: Solve for x
    x = 10,873,993,686.60/112,496.68
  6. Step 6: Final answer
    x = 96,660.57

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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.