Home / 145,220,976.29-200,399,100.62-79,140,055.71

Finding the Fourth Proportional to 145,220,976.29, 200,399,100.62 and 79,140,055.71

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Solution

The fourth proportional to 145,220,976.29, 200,399,100.62 and 79,140,055.71 is: 109,210,090.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,220,976.29 : 200,399,100.62 = 79,140,055.71 : x
  2. Step 2: Convert to fraction form
    145,220,976.29/200,399,100.62 = 79,140,055.71/x
  3. Step 3: Cross multiply
    145,220,976.29x = 200,399,100.62 × 79,140,055.71
  4. Step 4: Simplify right side
    145,220,976.29x = 15,859,595,986,904,994
  5. Step 5: Solve for x
    x = 15,859,595,986,904,994/145,220,976.29
  6. Step 6: Final answer
    x = 109,210,090.67

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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.