Home / 129,068.01-178,107.60-71,710.95

Finding the Fourth Proportional to 129,068.01, 178,107.60 and 71,710.95

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Solution

The fourth proportional to 129,068.01, 178,107.60 and 71,710.95 is: 98,957.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,068.01 : 178,107.60 = 71,710.95 : x
  2. Step 2: Convert to fraction form
    129,068.01/178,107.60 = 71,710.95/x
  3. Step 3: Cross multiply
    129,068.01x = 178,107.60 × 71,710.95
  4. Step 4: Simplify right side
    129,068.01x = 12,772,265,198.22
  5. Step 5: Solve for x
    x = 12,772,265,198.22/129,068.01
  6. Step 6: Final answer
    x = 98,957.64

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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.