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Finding the Fourth Proportional to 101,807,996.40, 152,488,045.80 and 90,461,257.20

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Solution

The fourth proportional to 101,807,996.40, 152,488,045.80 and 90,461,257.20 is: 135,492,896.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,807,996.40 : 152,488,045.80 = 90,461,257.20 : x
  2. Step 2: Convert to fraction form
    101,807,996.40/152,488,045.80 = 90,461,257.20/x
  3. Step 3: Cross multiply
    101,807,996.40x = 152,488,045.80 × 90,461,257.20
  4. Step 4: Simplify right side
    101,807,996.40x = 13,794,260,331,039,182
  5. Step 5: Solve for x
    x = 13,794,260,331,039,182/101,807,996.40
  6. Step 6: Final answer
    x = 135,492,896.62

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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.