Home / 142,314,161.68-196,393,711.12-77,124,065.68

Finding the Fourth Proportional to 142,314,161.68, 196,393,711.12 and 77,124,065.68

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Solution

The fourth proportional to 142,314,161.68, 196,393,711.12 and 77,124,065.68 is: 106,431,301.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,314,161.68 : 196,393,711.12 = 77,124,065.68 : x
  2. Step 2: Convert to fraction form
    142,314,161.68/196,393,711.12 = 77,124,065.68/x
  3. Step 3: Cross multiply
    142,314,161.68x = 196,393,711.12 × 77,124,065.68
  4. Step 4: Simplify right side
    142,314,161.68x = 15,146,681,475,557,828
  5. Step 5: Solve for x
    x = 15,146,681,475,557,828/142,314,161.68
  6. Step 6: Final answer
    x = 106,431,301.68

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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.