Home / 142,031,067.12-195,991,709.40-87,019,444.08

Finding the Fourth Proportional to 142,031,067.12, 195,991,709.40 and 87,019,444.08

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Solution

The fourth proportional to 142,031,067.12, 195,991,709.40 and 87,019,444.08 is: 120,079,993.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,031,067.12 : 195,991,709.40 = 87,019,444.08 : x
  2. Step 2: Convert to fraction form
    142,031,067.12/195,991,709.40 = 87,019,444.08/x
  3. Step 3: Cross multiply
    142,031,067.12x = 195,991,709.40 × 87,019,444.08
  4. Step 4: Simplify right side
    142,031,067.12x = 17,055,089,596,276,910
  5. Step 5: Solve for x
    x = 17,055,089,596,276,910/142,031,067.12
  6. Step 6: Final answer
    x = 120,079,993.36

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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.