Home / 156,010.21-215,294.00-84,390.24

Finding the Fourth Proportional to 156,010.21, 215,294.00 and 84,390.24

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Solution

The fourth proportional to 156,010.21, 215,294.00 and 84,390.24 is: 116,458.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,010.21 : 215,294.00 = 84,390.24 : x
  2. Step 2: Convert to fraction form
    156,010.21/215,294.00 = 84,390.24/x
  3. Step 3: Cross multiply
    156,010.21x = 215,294.00 × 84,390.24
  4. Step 4: Simplify right side
    156,010.21x = 18,168,711,792.51
  5. Step 5: Solve for x
    x = 18,168,711,792.51/156,010.21
  6. Step 6: Final answer
    x = 116,458.48

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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.