Home / 111,601.32-153,985.86-66,294.58

Finding the Fourth Proportional to 111,601.32, 153,985.86 and 66,294.58

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Solution

The fourth proportional to 111,601.32, 153,985.86 and 66,294.58 is: 91,472.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,601.32 : 153,985.86 = 66,294.58 : x
  2. Step 2: Convert to fraction form
    111,601.32/153,985.86 = 66,294.58/x
  3. Step 3: Cross multiply
    111,601.32x = 153,985.86 × 66,294.58
  4. Step 4: Simplify right side
    111,601.32x = 10,208,427,914.64
  5. Step 5: Solve for x
    x = 10,208,427,914.64/111,601.32
  6. Step 6: Final answer
    x = 91,472.29

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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.