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Finding the Fourth Proportional to 136,312.61, 204,510.62 and 69,799.80

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Solution

The fourth proportional to 136,312.61, 204,510.62 and 69,799.80 is: 104,721.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,312.61 : 204,510.62 = 69,799.80 : x
  2. Step 2: Convert to fraction form
    136,312.61/204,510.62 = 69,799.80/x
  3. Step 3: Cross multiply
    136,312.61x = 204,510.62 × 69,799.80
  4. Step 4: Simplify right side
    136,312.61x = 14,274,800,373.88
  5. Step 5: Solve for x
    x = 14,274,800,373.88/136,312.61
  6. Step 6: Final answer
    x = 104,721.06

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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.