Home / 100,621,880.60-138,857,360.51-56,569,075.80

Finding the Fourth Proportional to 100,621,880.60, 138,857,360.51 and 56,569,075.80

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Solution

The fourth proportional to 100,621,880.60, 138,857,360.51 and 56,569,075.80 is: 78,064,855.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621,880.60 : 138,857,360.51 = 56,569,075.80 : x
  2. Step 2: Convert to fraction form
    100,621,880.60/138,857,360.51 = 56,569,075.80/x
  3. Step 3: Cross multiply
    100,621,880.60x = 138,857,360.51 × 56,569,075.80
  4. Step 4: Simplify right side
    100,621,880.60x = 7,855,032,551,795,271
  5. Step 5: Solve for x
    x = 7,855,032,551,795,271/100,621,880.60
  6. Step 6: Final answer
    x = 78,064,855.33

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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.