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Finding the Fourth Proportional to 155,140.60, 232,710.90 and 55,413.40

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Solution

The fourth proportional to 155,140.60, 232,710.90 and 55,413.40 is: 83,120.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,140.60 : 232,710.90 = 55,413.40 : x
  2. Step 2: Convert to fraction form
    155,140.60/232,710.90 = 55,413.40/x
  3. Step 3: Cross multiply
    155,140.60x = 232,710.90 × 55,413.40
  4. Step 4: Simplify right side
    155,140.60x = 12,895,302,186.06
  5. Step 5: Solve for x
    x = 12,895,302,186.06/155,140.60
  6. Step 6: Final answer
    x = 83,120.10

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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.