Home / 138,409.02-191,004.46-74,746.80

Finding the Fourth Proportional to 138,409.02, 191,004.46 and 74,746.80

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Solution

The fourth proportional to 138,409.02, 191,004.46 and 74,746.80 is: 103,150.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,409.02 : 191,004.46 = 74,746.80 : x
  2. Step 2: Convert to fraction form
    138,409.02/191,004.46 = 74,746.80/x
  3. Step 3: Cross multiply
    138,409.02x = 191,004.46 × 74,746.80
  4. Step 4: Simplify right side
    138,409.02x = 14,276,971,983.86
  5. Step 5: Solve for x
    x = 14,276,971,983.86/138,409.02
  6. Step 6: Final answer
    x = 103,150.59

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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.