Home / 210,339,655.60-315,534,059.40-66,747,002.80

Finding the Fourth Proportional to 210,339,655.60, 315,534,059.40 and 66,747,002.80

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Solution

The fourth proportional to 210,339,655.60, 315,534,059.40 and 66,747,002.80 is: 100,128,302.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,339,655.60 : 315,534,059.40 = 66,747,002.80 : x
  2. Step 2: Convert to fraction form
    210,339,655.60/315,534,059.40 = 66,747,002.80/x
  3. Step 3: Cross multiply
    210,339,655.60x = 315,534,059.40 × 66,747,002.80
  4. Step 4: Simplify right side
    210,339,655.60x = 21,060,952,746,267,164
  5. Step 5: Solve for x
    x = 21,060,952,746,267,164/210,339,655.60
  6. Step 6: Final answer
    x = 100,128,302.89

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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.