Home / 100,188.02-138,272.27-57,746.86

Finding the Fourth Proportional to 100,188.02, 138,272.27 and 57,746.86

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Solution

The fourth proportional to 100,188.02, 138,272.27 and 57,746.86 is: 79,698.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,188.02 : 138,272.27 = 57,746.86 : x
  2. Step 2: Convert to fraction form
    100,188.02/138,272.27 = 57,746.86/x
  3. Step 3: Cross multiply
    100,188.02x = 138,272.27 × 57,746.86
  4. Step 4: Simplify right side
    100,188.02x = 7,984,788,783.16
  5. Step 5: Solve for x
    x = 7,984,788,783.16/100,188.02
  6. Step 6: Final answer
    x = 79,698.04

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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.