Home / 149,089,048.93-205,740,430.81-87,219,868.69

Finding the Fourth Proportional to 149,089,048.93, 205,740,430.81 and 87,219,868.69

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Solution

The fourth proportional to 149,089,048.93, 205,740,430.81 and 87,219,868.69 is: 120,361,981.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,089,048.93 : 205,740,430.81 = 87,219,868.69 : x
  2. Step 2: Convert to fraction form
    149,089,048.93/205,740,430.81 = 87,219,868.69/x
  3. Step 3: Cross multiply
    149,089,048.93x = 205,740,430.81 × 87,219,868.69
  4. Step 4: Simplify right side
    149,089,048.93x = 17,944,653,359,472,230
  5. Step 5: Solve for x
    x = 17,944,653,359,472,230/149,089,048.93
  6. Step 6: Final answer
    x = 120,361,981.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.