Home / 210,370.32-315,680.40-84,070.26

Finding the Fourth Proportional to 210,370.32, 315,680.40 and 84,070.26

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Solution

The fourth proportional to 210,370.32, 315,680.40 and 84,070.26 is: 126,155.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,370.32 : 315,680.40 = 84,070.26 : x
  2. Step 2: Convert to fraction form
    210,370.32/315,680.40 = 84,070.26/x
  3. Step 3: Cross multiply
    210,370.32x = 315,680.40 × 84,070.26
  4. Step 4: Simplify right side
    210,370.32x = 26,539,333,304.90
  5. Step 5: Solve for x
    x = 26,539,333,304.90/210,370.32
  6. Step 6: Final answer
    x = 126,155.31

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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.