Home / 142,545,812.28-196,713,220.89-77,355,716.28

Finding the Fourth Proportional to 142,545,812.28, 196,713,220.89 and 77,355,716.28

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Solution

The fourth proportional to 142,545,812.28, 196,713,220.89 and 77,355,716.28 is: 106,750,888.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,545,812.28 : 196,713,220.89 = 77,355,716.28 : x
  2. Step 2: Convert to fraction form
    142,545,812.28/196,713,220.89 = 77,355,716.28/x
  3. Step 3: Cross multiply
    142,545,812.28x = 196,713,220.89 × 77,355,716.28
  4. Step 4: Simplify right side
    142,545,812.28x = 15,216,892,103,691,808
  5. Step 5: Solve for x
    x = 15,216,892,103,691,808/142,545,812.28
  6. Step 6: Final answer
    x = 106,750,888.44

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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.