Home / 155,408,842.61-214,458,580.50-85,792,728.68

Finding the Fourth Proportional to 155,408,842.61, 214,458,580.50 and 85,792,728.68

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Solution

The fourth proportional to 155,408,842.61, 214,458,580.50 and 85,792,728.68 is: 118,390,861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,408,842.61 : 214,458,580.50 = 85,792,728.68 : x
  2. Step 2: Convert to fraction form
    155,408,842.61/214,458,580.50 = 85,792,728.68/x
  3. Step 3: Cross multiply
    155,408,842.61x = 214,458,580.50 × 85,792,728.68
  4. Step 4: Simplify right side
    155,408,842.61x = 18,398,986,809,934,440
  5. Step 5: Solve for x
    x = 18,398,986,809,934,440/155,408,842.61
  6. Step 6: Final answer
    x = 118,390,861.81

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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.