Home / 112,130.42-154,738.86-61,143.03

Finding the Fourth Proportional to 112,130.42, 154,738.86 and 61,143.03

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Solution

The fourth proportional to 112,130.42, 154,738.86 and 61,143.03 is: 84,376.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,130.42 : 154,738.86 = 61,143.03 : x
  2. Step 2: Convert to fraction form
    112,130.42/154,738.86 = 61,143.03/x
  3. Step 3: Cross multiply
    112,130.42x = 154,738.86 × 61,143.03
  4. Step 4: Simplify right side
    112,130.42x = 9,461,201,949.59
  5. Step 5: Solve for x
    x = 9,461,201,949.59/112,130.42
  6. Step 6: Final answer
    x = 84,376.76

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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.