Home / 128,385,255.47-192,702,413.57-61,958,430.80

Finding the Fourth Proportional to 128,385,255.47, 192,702,413.57 and 61,958,430.80

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Solution

The fourth proportional to 128,385,255.47, 192,702,413.57 and 61,958,430.80 is: 92,997,744.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,385,255.47 : 192,702,413.57 = 61,958,430.80 : x
  2. Step 2: Convert to fraction form
    128,385,255.47/192,702,413.57 = 61,958,430.80/x
  3. Step 3: Cross multiply
    128,385,255.47x = 192,702,413.57 × 61,958,430.80
  4. Step 4: Simplify right side
    128,385,255.47x = 11,939,539,154,896,522
  5. Step 5: Solve for x
    x = 11,939,539,154,896,522/128,385,255.47
  6. Step 6: Final answer
    x = 92,997,744.26

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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.