Home / 138,413.02-191,009.98-74,750.80

Finding the Fourth Proportional to 138,413.02, 191,009.98 and 74,750.80

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Solution

The fourth proportional to 138,413.02, 191,009.98 and 74,750.80 is: 103,156.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,413.02 : 191,009.98 = 74,750.80 : x
  2. Step 2: Convert to fraction form
    138,413.02/191,009.98 = 74,750.80/x
  3. Step 3: Cross multiply
    138,413.02x = 191,009.98 × 74,750.80
  4. Step 4: Simplify right side
    138,413.02x = 14,278,148,812.98
  5. Step 5: Solve for x
    x = 14,278,148,812.98/138,413.02
  6. Step 6: Final answer
    x = 103,156.11

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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.