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Finding the Fourth Proportional to 122,359.84, 168,799.44 and 77,017.12

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Solution

The fourth proportional to 122,359.84, 168,799.44 and 77,017.12 is: 106,247.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,359.84 : 168,799.44 = 77,017.12 : x
  2. Step 2: Convert to fraction form
    122,359.84/168,799.44 = 77,017.12/x
  3. Step 3: Cross multiply
    122,359.84x = 168,799.44 × 77,017.12
  4. Step 4: Simplify right side
    122,359.84x = 13,000,446,726.41
  5. Step 5: Solve for x
    x = 13,000,446,726.41/122,359.84
  6. Step 6: Final answer
    x = 106,247.66

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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.