Home / 142,030,217.28-195,999,764.40-79,307,284.08

Finding the Fourth Proportional to 142,030,217.28, 195,999,764.40 and 79,307,284.08

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Solution

The fourth proportional to 142,030,217.28, 195,999,764.40 and 79,307,284.08 is: 109,442,971.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,030,217.28 : 195,999,764.40 = 79,307,284.08 : x
  2. Step 2: Convert to fraction form
    142,030,217.28/195,999,764.40 = 79,307,284.08/x
  3. Step 3: Cross multiply
    142,030,217.28x = 195,999,764.40 × 79,307,284.08
  4. Step 4: Simplify right side
    142,030,217.28x = 15,544,208,994,883,870
  5. Step 5: Solve for x
    x = 15,544,208,994,883,870/142,030,217.28
  6. Step 6: Final answer
    x = 109,442,971.31

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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.