Home / 93,780.26-129,405.30-74,708.60

Finding the Fourth Proportional to 93,780.26, 129,405.30 and 74,708.60

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Solution

The fourth proportional to 93,780.26, 129,405.30 and 74,708.60 is: 103,088.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,780.26 : 129,405.30 = 74,708.60 : x
  2. Step 2: Convert to fraction form
    93,780.26/129,405.30 = 74,708.60/x
  3. Step 3: Cross multiply
    93,780.26x = 129,405.30 × 74,708.60
  4. Step 4: Simplify right side
    93,780.26x = 9,667,688,795.58
  5. Step 5: Solve for x
    x = 9,667,688,795.58/93,780.26
  6. Step 6: Final answer
    x = 103,088.74

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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.