Home / 145,044,100.23-200,162,069.40-78,965,058.45

Finding the Fourth Proportional to 145,044,100.23, 200,162,069.40 and 78,965,058.45

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Solution

The fourth proportional to 145,044,100.23, 200,162,069.40 and 78,965,058.45 is: 108,972,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,044,100.23 : 200,162,069.40 = 78,965,058.45 : x
  2. Step 2: Convert to fraction form
    145,044,100.23/200,162,069.40 = 78,965,058.45/x
  3. Step 3: Cross multiply
    145,044,100.23x = 200,162,069.40 × 78,965,058.45
  4. Step 4: Simplify right side
    145,044,100.23x = 15,805,809,509,643,958
  5. Step 5: Solve for x
    x = 15,805,809,509,643,958/145,044,100.23
  6. Step 6: Final answer
    x = 108,972,440.00

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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.