Home / 111,239.26-153,521.18-63,499.78

Finding the Fourth Proportional to 111,239.26, 153,521.18 and 63,499.78

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Solution

The fourth proportional to 111,239.26, 153,521.18 and 63,499.78 is: 87,635.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,239.26 : 153,521.18 = 63,499.78 : x
  2. Step 2: Convert to fraction form
    111,239.26/153,521.18 = 63,499.78/x
  3. Step 3: Cross multiply
    111,239.26x = 153,521.18 × 63,499.78
  4. Step 4: Simplify right side
    111,239.26x = 9,748,561,155.34
  5. Step 5: Solve for x
    x = 9,748,561,155.34/111,239.26
  6. Step 6: Final answer
    x = 87,635.98

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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.