Home / 103,039,003.20-154,558,504.80-77,340,878.40

Finding the Fourth Proportional to 103,039,003.20, 154,558,504.80 and 77,340,878.40

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Solution

The fourth proportional to 103,039,003.20, 154,558,504.80 and 77,340,878.40 is: 116,011,317.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,039,003.20 : 154,558,504.80 = 77,340,878.40 : x
  2. Step 2: Convert to fraction form
    103,039,003.20/154,558,504.80 = 77,340,878.40/x
  3. Step 3: Cross multiply
    103,039,003.20x = 154,558,504.80 × 77,340,878.40
  4. Step 4: Simplify right side
    103,039,003.20x = 11,953,690,525,422,618
  5. Step 5: Solve for x
    x = 11,953,690,525,422,618/103,039,003.20
  6. Step 6: Final answer
    x = 116,011,317.60

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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.