Home / 99,648,280.80-149,472,421.20-74,139,112.80

Finding the Fourth Proportional to 99,648,280.80, 149,472,421.20 and 74,139,112.80

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Solution

The fourth proportional to 99,648,280.80, 149,472,421.20 and 74,139,112.80 is: 111,208,669.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,648,280.80 : 149,472,421.20 = 74,139,112.80 : x
  2. Step 2: Convert to fraction form
    99,648,280.80/149,472,421.20 = 74,139,112.80/x
  3. Step 3: Cross multiply
    99,648,280.80x = 149,472,421.20 × 74,139,112.80
  4. Step 4: Simplify right side
    99,648,280.80x = 11,081,752,695,835,910
  5. Step 5: Solve for x
    x = 11,081,752,695,835,910/99,648,280.80
  6. Step 6: Final answer
    x = 111,208,669.20

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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.