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Finding the Fourth Proportional to 194,785.80, 292,178.70 and 100,307.40

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Solution

The fourth proportional to 194,785.80, 292,178.70 and 100,307.40 is: 150,461.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    194,785.80 : 292,178.70 = 100,307.40 : x
  2. Step 2: Convert to fraction form
    194,785.80/292,178.70 = 100,307.40/x
  3. Step 3: Cross multiply
    194,785.80x = 292,178.70 × 100,307.40
  4. Step 4: Simplify right side
    194,785.80x = 29,307,685,732.38
  5. Step 5: Solve for x
    x = 29,307,685,732.38/194,785.80
  6. Step 6: Final answer
    x = 150,461.10

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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.