Home / 120,298,920.26-180,487,242.04-55,645,136.88

Finding the Fourth Proportional to 120,298,920.26, 180,487,242.04 and 55,645,136.88

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Solution

The fourth proportional to 120,298,920.26, 180,487,242.04 and 55,645,136.88 is: 83,485,681.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,298,920.26 : 180,487,242.04 = 55,645,136.88 : x
  2. Step 2: Convert to fraction form
    120,298,920.26/180,487,242.04 = 55,645,136.88/x
  3. Step 3: Cross multiply
    120,298,920.26x = 180,487,242.04 × 55,645,136.88
  4. Step 4: Simplify right side
    120,298,920.26x = 10,043,237,288,409,490
  5. Step 5: Solve for x
    x = 10,043,237,288,409,490/120,298,920.26
  6. Step 6: Final answer
    x = 83,485,681.06

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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.