Home / 111,243.18-153,530.19-63,485.58

Finding the Fourth Proportional to 111,243.18, 153,530.19 and 63,485.58

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Solution

The fourth proportional to 111,243.18, 153,530.19 and 63,485.58 is: 87,618.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,243.18 : 153,530.19 = 63,485.58 : x
  2. Step 2: Convert to fraction form
    111,243.18/153,530.19 = 63,485.58/x
  3. Step 3: Cross multiply
    111,243.18x = 153,530.19 × 63,485.58
  4. Step 4: Simplify right side
    111,243.18x = 9,746,953,159.66
  5. Step 5: Solve for x
    x = 9,746,953,159.66/111,243.18
  6. Step 6: Final answer
    x = 87,618.43

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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.