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Finding the Fourth Proportional to 122,307.71, 168,786.35 and 73,902.92

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Solution

The fourth proportional to 122,307.71, 168,786.35 and 73,902.92 is: 101,987.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,307.71 : 168,786.35 = 73,902.92 : x
  2. Step 2: Convert to fraction form
    122,307.71/168,786.35 = 73,902.92/x
  3. Step 3: Cross multiply
    122,307.71x = 168,786.35 × 73,902.92
  4. Step 4: Simplify right side
    122,307.71x = 12,473,803,184.83
  5. Step 5: Solve for x
    x = 12,473,803,184.83/122,307.71
  6. Step 6: Final answer
    x = 101,987.06

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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.