Home / 138,711,055.20-208,066,582.80-130,207,999.20

Finding the Fourth Proportional to 138,711,055.20, 208,066,582.80 and 130,207,999.20

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Solution

The fourth proportional to 138,711,055.20, 208,066,582.80 and 130,207,999.20 is: 195,311,998.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,711,055.20 : 208,066,582.80 = 130,207,999.20 : x
  2. Step 2: Convert to fraction form
    138,711,055.20/208,066,582.80 = 130,207,999.20/x
  3. Step 3: Cross multiply
    138,711,055.20x = 208,066,582.80 × 130,207,999.20
  4. Step 4: Simplify right side
    138,711,055.20x = 27,091,933,446,769,136
  5. Step 5: Solve for x
    x = 27,091,933,446,769,136/138,711,055.20
  6. Step 6: Final answer
    x = 195,311,998.80

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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.