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Finding the Fourth Proportional to 130,000.70, 194,818.80 and 103,392.20

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Solution

The fourth proportional to 130,000.70, 194,818.80 and 103,392.20 is: 154,943.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,000.70 : 194,818.80 = 103,392.20 : x
  2. Step 2: Convert to fraction form
    130,000.70/194,818.80 = 103,392.20/x
  3. Step 3: Cross multiply
    130,000.70x = 194,818.80 × 103,392.20
  4. Step 4: Simplify right side
    130,000.70x = 20,142,744,333.36
  5. Step 5: Solve for x
    x = 20,142,744,333.36/130,000.70
  6. Step 6: Final answer
    x = 154,943.35

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1.5x scale

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.