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Finding the Fourth Proportional to 100,102,021.70, 140,344,384.30 and 100,102,021.70

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Solution

The fourth proportional to 100,102,021.70, 140,344,384.30 and 100,102,021.70 is: 140,344,384.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,102,021.70 : 140,344,384.30 = 100,102,021.70 : x
  2. Step 2: Convert to fraction form
    100,102,021.70/140,344,384.30 = 100,102,021.70/x
  3. Step 3: Cross multiply
    100,102,021.70x = 140,344,384.30 × 100,102,021.70
  4. Step 4: Simplify right side
    100,102,021.70x = 14,048,756,602,671,740
  5. Step 5: Solve for x
    x = 14,048,756,602,671,740/100,102,021.70
  6. Step 6: Final answer
    x = 140,344,384.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.