Home / 138,594.02-191,289.42-87,574.36

Finding the Fourth Proportional to 138,594.02, 191,289.42 and 87,574.36

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Solution

The fourth proportional to 138,594.02, 191,289.42 and 87,574.36 is: 120,871.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,594.02 : 191,289.42 = 87,574.36 : x
  2. Step 2: Convert to fraction form
    138,594.02/191,289.42 = 87,574.36/x
  3. Step 3: Cross multiply
    138,594.02x = 191,289.42 × 87,574.36
  4. Step 4: Simplify right side
    138,594.02x = 16,752,048,531.27
  5. Step 5: Solve for x
    x = 16,752,048,531.27/138,594.02
  6. Step 6: Final answer
    x = 120,871.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.