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Finding the Fourth Proportional to 130,005, 179,421.48 and 73,420.02

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Solution

The fourth proportional to 130,005, 179,421.48 and 73,420.02 is: 101,327.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,005 : 179,421.48 = 73,420.02 : x
  2. Step 2: Convert to fraction form
    130,005/179,421.48 = 73,420.02/x
  3. Step 3: Cross multiply
    130,005x = 179,421.48 × 73,420.02
  4. Step 4: Simplify right side
    130,005x = 13,173,128,650.03
  5. Step 5: Solve for x
    x = 13,173,128,650.03/130,005
  6. Step 6: Final answer
    x = 101,327.86

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1.5x scale

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.