Home / 145,075.55-200,213.14-81,413.35

Finding the Fourth Proportional to 145,075.55, 200,213.14 and 81,413.35

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Solution

The fourth proportional to 145,075.55, 200,213.14 and 81,413.35 is: 112,355.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,075.55 : 200,213.14 = 81,413.35 : x
  2. Step 2: Convert to fraction form
    145,075.55/200,213.14 = 81,413.35/x
  3. Step 3: Cross multiply
    145,075.55x = 200,213.14 × 81,413.35
  4. Step 4: Simplify right side
    145,075.55x = 16,300,021,737.35
  5. Step 5: Solve for x
    x = 16,300,021,737.35/145,075.55
  6. Step 6: Final answer
    x = 112,355.41

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1.5x scale

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.