Home / 112,312.21-154,972.55-66,365.45

Finding the Fourth Proportional to 112,312.21, 154,972.55 and 66,365.45

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Solution

The fourth proportional to 112,312.21, 154,972.55 and 66,365.45 is: 91,573.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,312.21 : 154,972.55 = 66,365.45 : x
  2. Step 2: Convert to fraction form
    112,312.21/154,972.55 = 66,365.45/x
  3. Step 3: Cross multiply
    112,312.21x = 154,972.55 × 66,365.45
  4. Step 4: Simplify right side
    112,312.21x = 10,284,823,074.00
  5. Step 5: Solve for x
    x = 10,284,823,074.00/112,312.21
  6. Step 6: Final answer
    x = 91,573.51

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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.