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Finding the Fourth Proportional to 102,660.61, 154,264.28 and 55,312.06

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Solution

The fourth proportional to 102,660.61, 154,264.28 and 55,312.06 is: 83,115.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,660.61 : 154,264.28 = 55,312.06 : x
  2. Step 2: Convert to fraction form
    102,660.61/154,264.28 = 55,312.06/x
  3. Step 3: Cross multiply
    102,660.61x = 154,264.28 × 55,312.06
  4. Step 4: Simplify right side
    102,660.61x = 8,532,674,449.00
  5. Step 5: Solve for x
    x = 8,532,674,449.00/102,660.61
  6. Step 6: Final answer
    x = 83,115.37

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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.