Home / 111,421.86-153,753.03-61,120.86

Finding the Fourth Proportional to 111,421.86, 153,753.03 and 61,120.86

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Solution

The fourth proportional to 111,421.86, 153,753.03 and 61,120.86 is: 84,341.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,421.86 : 153,753.03 = 61,120.86 : x
  2. Step 2: Convert to fraction form
    111,421.86/153,753.03 = 61,120.86/x
  3. Step 3: Cross multiply
    111,421.86x = 153,753.03 × 61,120.86
  4. Step 4: Simplify right side
    111,421.86x = 9,397,517,421.21
  5. Step 5: Solve for x
    x = 9,397,517,421.21/111,421.86
  6. Step 6: Final answer
    x = 84,341.77

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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.