Home / 99,781,142.40-149,559,739.20-56,670,998.40

Finding the Fourth Proportional to 99,781,142.40, 149,559,739.20 and 56,670,998.40

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Solution

The fourth proportional to 99,781,142.40, 149,559,739.20 and 56,670,998.40 is: 84,942,901.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,781,142.40 : 149,559,739.20 = 56,670,998.40 : x
  2. Step 2: Convert to fraction form
    99,781,142.40/149,559,739.20 = 56,670,998.40/x
  3. Step 3: Cross multiply
    99,781,142.40x = 149,559,739.20 × 56,670,998.40
  4. Step 4: Simplify right side
    99,781,142.40x = 8,475,699,740,907,616
  5. Step 5: Solve for x
    x = 8,475,699,740,907,616/99,781,142.40
  6. Step 6: Final answer
    x = 84,942,901.40

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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.