Home / 111,487.07-153,816.36-62,421.47

Finding the Fourth Proportional to 111,487.07, 153,816.36 and 62,421.47

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Solution

The fourth proportional to 111,487.07, 153,816.36 and 62,421.47 is: 86,121.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,487.07 : 153,816.36 = 62,421.47 : x
  2. Step 2: Convert to fraction form
    111,487.07/153,816.36 = 62,421.47/x
  3. Step 3: Cross multiply
    111,487.07x = 153,816.36 × 62,421.47
  4. Step 4: Simplify right side
    111,487.07x = 9,601,442,874.90
  5. Step 5: Solve for x
    x = 9,601,442,874.90/111,487.07
  6. Step 6: Final answer
    x = 86,121.58

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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.