Home / 155,285,835.89-214,292,975.69-85,671,779.09

Finding the Fourth Proportional to 155,285,835.89, 214,292,975.69 and 85,671,779.09

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Solution

The fourth proportional to 155,285,835.89, 214,292,975.69 and 85,671,779.09 is: 118,226,239.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,285,835.89 : 214,292,975.69 = 85,671,779.09 : x
  2. Step 2: Convert to fraction form
    155,285,835.89/214,292,975.69 = 85,671,779.09/x
  3. Step 3: Cross multiply
    155,285,835.89x = 214,292,975.69 × 85,671,779.09
  4. Step 4: Simplify right side
    155,285,835.89x = 18,358,860,472,995,132
  5. Step 5: Solve for x
    x = 18,358,860,472,995,132/155,285,835.89
  6. Step 6: Final answer
    x = 118,226,239.81

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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.