Home / 111,431.56-153,777.96-61,130.56

Finding the Fourth Proportional to 111,431.56, 153,777.96 and 61,130.56

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Solution

The fourth proportional to 111,431.56, 153,777.96 and 61,130.56 is: 84,361.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,431.56 : 153,777.96 = 61,130.56 : x
  2. Step 2: Convert to fraction form
    111,431.56/153,777.96 = 61,130.56/x
  3. Step 3: Cross multiply
    111,431.56x = 153,777.96 × 61,130.56
  4. Step 4: Simplify right side
    111,431.56x = 9,400,532,810.46
  5. Step 5: Solve for x
    x = 9,400,532,810.46/111,431.56
  6. Step 6: Final answer
    x = 84,361.49

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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.