Home / 129,421.70-178,574.39-75,696.23

Finding the Fourth Proportional to 129,421.70, 178,574.39 and 75,696.23

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Solution

The fourth proportional to 129,421.70, 178,574.39 and 75,696.23 is: 104,444.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,421.70 : 178,574.39 = 75,696.23 : x
  2. Step 2: Convert to fraction form
    129,421.70/178,574.39 = 75,696.23/x
  3. Step 3: Cross multiply
    129,421.70x = 178,574.39 × 75,696.23
  4. Step 4: Simplify right side
    129,421.70x = 13,517,406,826.20
  5. Step 5: Solve for x
    x = 13,517,406,826.20/129,421.70
  6. Step 6: Final answer
    x = 104,444.67

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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.