Home / 129,324.16-178,465.63-72,735.54

Finding the Fourth Proportional to 129,324.16, 178,465.63 and 72,735.54

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Solution

The fourth proportional to 129,324.16, 178,465.63 and 72,735.54 is: 100,374.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,324.16 : 178,465.63 = 72,735.54 : x
  2. Step 2: Convert to fraction form
    129,324.16/178,465.63 = 72,735.54/x
  3. Step 3: Cross multiply
    129,324.16x = 178,465.63 × 72,735.54
  4. Step 4: Simplify right side
    129,324.16x = 12,980,793,254.78
  5. Step 5: Solve for x
    x = 12,980,793,254.78/129,324.16
  6. Step 6: Final answer
    x = 100,374.08

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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.