Home / 210,942.20-316,413.30-70,705.40

Finding the Fourth Proportional to 210,942.20, 316,413.30 and 70,705.40

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Solution

The fourth proportional to 210,942.20, 316,413.30 and 70,705.40 is: 106,058.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,942.20 : 316,413.30 = 70,705.40 : x
  2. Step 2: Convert to fraction form
    210,942.20/316,413.30 = 70,705.40/x
  3. Step 3: Cross multiply
    210,942.20x = 316,413.30 × 70,705.40
  4. Step 4: Simplify right side
    210,942.20x = 22,372,128,941.82
  5. Step 5: Solve for x
    x = 22,372,128,941.82/210,942.20
  6. Step 6: Final answer
    x = 106,058.10

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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.