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Finding the Fourth Proportional to 109,675.40, 164,537.40 and 86,055.80

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Solution

The fourth proportional to 109,675.40, 164,537.40 and 86,055.80 is: 129,102.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,675.40 : 164,537.40 = 86,055.80 : x
  2. Step 2: Convert to fraction form
    109,675.40/164,537.40 = 86,055.80/x
  3. Step 3: Cross multiply
    109,675.40x = 164,537.40 × 86,055.80
  4. Step 4: Simplify right side
    109,675.40x = 14,159,397,586.92
  5. Step 5: Solve for x
    x = 14,159,397,586.92/109,675.40
  6. Step 6: Final answer
    x = 129,102.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.