Home / 210,022.60-315,077.10-69,881.80

Finding the Fourth Proportional to 210,022.60, 315,077.10 and 69,881.80

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Solution

The fourth proportional to 210,022.60, 315,077.10 and 69,881.80 is: 104,837.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,022.60 : 315,077.10 = 69,881.80 : x
  2. Step 2: Convert to fraction form
    210,022.60/315,077.10 = 69,881.80/x
  3. Step 3: Cross multiply
    210,022.60x = 315,077.10 × 69,881.80
  4. Step 4: Simplify right side
    210,022.60x = 22,018,154,886.78
  5. Step 5: Solve for x
    x = 22,018,154,886.78/210,022.60
  6. Step 6: Final answer
    x = 104,837.07

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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.