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Finding the Fourth Proportional to 102,956.70, 154,362.15 and 39,752.40

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Solution

The fourth proportional to 102,956.70, 154,362.15 and 39,752.40 is: 59,600.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,956.70 : 154,362.15 = 39,752.40 : x
  2. Step 2: Convert to fraction form
    102,956.70/154,362.15 = 39,752.40/x
  3. Step 3: Cross multiply
    102,956.70x = 154,362.15 × 39,752.40
  4. Step 4: Simplify right side
    102,956.70x = 6,136,265,931.66
  5. Step 5: Solve for x
    x = 6,136,265,931.66/102,956.70
  6. Step 6: Final answer
    x = 59,600.45

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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.