Home / 185,435.72-278,165.32-71,637.80

Finding the Fourth Proportional to 185,435.72, 278,165.32 and 71,637.80

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Solution

The fourth proportional to 185,435.72, 278,165.32 and 71,637.80 is: 107,461.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,435.72 : 278,165.32 = 71,637.80 : x
  2. Step 2: Convert to fraction form
    185,435.72/278,165.32 = 71,637.80/x
  3. Step 3: Cross multiply
    185,435.72x = 278,165.32 × 71,637.80
  4. Step 4: Simplify right side
    185,435.72x = 19,927,151,561.10
  5. Step 5: Solve for x
    x = 19,927,151,561.10/185,435.72
  6. Step 6: Final answer
    x = 107,461.24

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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.