Home / 155,060,440.72-213,984,843.28-85,448,312.80

Finding the Fourth Proportional to 155,060,440.72, 213,984,843.28 and 85,448,312.80

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Solution

The fourth proportional to 155,060,440.72, 213,984,843.28 and 85,448,312.80 is: 117,919,462.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,060,440.72 : 213,984,843.28 = 85,448,312.80 : x
  2. Step 2: Convert to fraction form
    155,060,440.72/213,984,843.28 = 85,448,312.80/x
  3. Step 3: Cross multiply
    155,060,440.72x = 213,984,843.28 × 85,448,312.80
  4. Step 4: Simplify right side
    155,060,440.72x = 18,284,643,823,048,416
  5. Step 5: Solve for x
    x = 18,284,643,823,048,416/155,060,440.72
  6. Step 6: Final answer
    x = 117,919,462.49

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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.