Home / 129,477.56-178,683.86-71,336.66

Finding the Fourth Proportional to 129,477.56, 178,683.86 and 71,336.66

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Solution

The fourth proportional to 129,477.56, 178,683.86 and 71,336.66 is: 98,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,477.56 : 178,683.86 = 71,336.66 : x
  2. Step 2: Convert to fraction form
    129,477.56/178,683.86 = 71,336.66/x
  3. Step 3: Cross multiply
    129,477.56x = 178,683.86 × 71,336.66
  4. Step 4: Simplify right side
    129,477.56x = 12,746,710,393.36
  5. Step 5: Solve for x
    x = 12,746,710,393.36/129,477.56
  6. Step 6: Final answer
    x = 98,447.25

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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.