Home / 129,560.96-178,794.72-72,973.28

Finding the Fourth Proportional to 129,560.96, 178,794.72 and 72,973.28

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Solution

The fourth proportional to 129,560.96, 178,794.72 and 72,973.28 is: 100,703.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,560.96 : 178,794.72 = 72,973.28 : x
  2. Step 2: Convert to fraction form
    129,560.96/178,794.72 = 72,973.28/x
  3. Step 3: Cross multiply
    129,560.96x = 178,794.72 × 72,973.28
  4. Step 4: Simplify right side
    129,560.96x = 13,047,237,165.08
  5. Step 5: Solve for x
    x = 13,047,237,165.08/129,560.96
  6. Step 6: Final answer
    x = 100,703.46

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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.