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Finding the Fourth Proportional to 148,647.94, 205,134.30 and 84,987.07

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Solution

The fourth proportional to 148,647.94, 205,134.30 and 84,987.07 is: 117,282.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,647.94 : 205,134.30 = 84,987.07 : x
  2. Step 2: Convert to fraction form
    148,647.94/205,134.30 = 84,987.07/x
  3. Step 3: Cross multiply
    148,647.94x = 205,134.30 × 84,987.07
  4. Step 4: Simplify right side
    148,647.94x = 17,433,762,901.03
  5. Step 5: Solve for x
    x = 17,433,762,901.03/148,647.94
  6. Step 6: Final answer
    x = 117,282.24

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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.