Home / 154,220.72-212,812.90-93,782.96

Finding the Fourth Proportional to 154,220.72, 212,812.90 and 93,782.96

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Solution

The fourth proportional to 154,220.72, 212,812.90 and 93,782.96 is: 129,413.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,220.72 : 212,812.90 = 93,782.96 : x
  2. Step 2: Convert to fraction form
    154,220.72/212,812.90 = 93,782.96/x
  3. Step 3: Cross multiply
    154,220.72x = 212,812.90 × 93,782.96
  4. Step 4: Simplify right side
    154,220.72x = 19,958,223,688.18
  5. Step 5: Solve for x
    x = 19,958,223,688.18/154,220.72
  6. Step 6: Final answer
    x = 129,413.37

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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.