Home / 153,582.10-211,960.47-85,605.28

Finding the Fourth Proportional to 153,582.10, 211,960.47 and 85,605.28

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Solution

The fourth proportional to 153,582.10, 211,960.47 and 85,605.28 is: 118,144.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,582.10 : 211,960.47 = 85,605.28 : x
  2. Step 2: Convert to fraction form
    153,582.10/211,960.47 = 85,605.28/x
  3. Step 3: Cross multiply
    153,582.10x = 211,960.47 × 85,605.28
  4. Step 4: Simplify right side
    153,582.10x = 18,144,935,383.28
  5. Step 5: Solve for x
    x = 18,144,935,383.28/153,582.10
  6. Step 6: Final answer
    x = 118,144.86

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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.