Home / 99,778,898.60-149,724,335.10-42,261,381.80

Finding the Fourth Proportional to 99,778,898.60, 149,724,335.10 and 42,261,381.80

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Solution

The fourth proportional to 99,778,898.60, 149,724,335.10 and 42,261,381.80 is: 63,415,786.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,778,898.60 : 149,724,335.10 = 42,261,381.80 : x
  2. Step 2: Convert to fraction form
    99,778,898.60/149,724,335.10 = 42,261,381.80/x
  3. Step 3: Cross multiply
    99,778,898.60x = 149,724,335.10 × 42,261,381.80
  4. Step 4: Simplify right side
    99,778,898.60x = 6,327,557,290,412,240
  5. Step 5: Solve for x
    x = 6,327,557,290,412,240/99,778,898.60
  6. Step 6: Final answer
    x = 63,415,786.09

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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.