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Finding the Fourth Proportional to 125,842,685.40, 188,764,028.10 and 39,607,525.80

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Solution

The fourth proportional to 125,842,685.40, 188,764,028.10 and 39,607,525.80 is: 59,411,288.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,842,685.40 : 188,764,028.10 = 39,607,525.80 : x
  2. Step 2: Convert to fraction form
    125,842,685.40/188,764,028.10 = 39,607,525.80/x
  3. Step 3: Cross multiply
    125,842,685.40x = 188,764,028.10 × 39,607,525.80
  4. Step 4: Simplify right side
    125,842,685.40x = 7,476,476,113,082,674
  5. Step 5: Solve for x
    x = 7,476,476,113,082,674/125,842,685.40
  6. Step 6: Final answer
    x = 59,411,288.70

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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.