Home / 138,412.02-191,008.60-74,749.80

Finding the Fourth Proportional to 138,412.02, 191,008.60 and 74,749.80

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Solution

The fourth proportional to 138,412.02, 191,008.60 and 74,749.80 is: 103,154.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,412.02 : 191,008.60 = 74,749.80 : x
  2. Step 2: Convert to fraction form
    138,412.02/191,008.60 = 74,749.80/x
  3. Step 3: Cross multiply
    138,412.02x = 191,008.60 × 74,749.80
  4. Step 4: Simplify right side
    138,412.02x = 14,277,854,648.28
  5. Step 5: Solve for x
    x = 14,277,854,648.28/138,412.02
  6. Step 6: Final answer
    x = 103,154.73

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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.