Home / 210,388.04-315,584.86-70,146.72

Finding the Fourth Proportional to 210,388.04, 315,584.86 and 70,146.72

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Solution

The fourth proportional to 210,388.04, 315,584.86 and 70,146.72 is: 105,221.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,388.04 : 315,584.86 = 70,146.72 : x
  2. Step 2: Convert to fraction form
    210,388.04/315,584.86 = 70,146.72/x
  3. Step 3: Cross multiply
    210,388.04x = 315,584.86 × 70,146.72
  4. Step 4: Simplify right side
    210,388.04x = 22,137,242,810.66
  5. Step 5: Solve for x
    x = 22,137,242,810.66/210,388.04
  6. Step 6: Final answer
    x = 105,221.01

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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.