Home / 142,030,945.05-212,858,075.85-72,940,957.84

Finding the Fourth Proportional to 142,030,945.05, 212,858,075.85 and 72,940,957.84

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Solution

The fourth proportional to 142,030,945.05, 212,858,075.85 and 72,940,957.84 is: 109,314,712.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,030,945.05 : 212,858,075.85 = 72,940,957.84 : x
  2. Step 2: Convert to fraction form
    142,030,945.05/212,858,075.85 = 72,940,957.84/x
  3. Step 3: Cross multiply
    142,030,945.05x = 212,858,075.85 × 72,940,957.84
  4. Step 4: Simplify right side
    142,030,945.05x = 15,526,071,936,478,372
  5. Step 5: Solve for x
    x = 15,526,071,936,478,372/142,030,945.05
  6. Step 6: Final answer
    x = 109,314,712.59

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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.