Home / 129,140.76-178,235.40-107,596.34

Finding the Fourth Proportional to 129,140.76, 178,235.40 and 107,596.34

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Solution

The fourth proportional to 129,140.76, 178,235.40 and 107,596.34 is: 148,500.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,140.76 : 178,235.40 = 107,596.34 : x
  2. Step 2: Convert to fraction form
    129,140.76/178,235.40 = 107,596.34/x
  3. Step 3: Cross multiply
    129,140.76x = 178,235.40 × 107,596.34
  4. Step 4: Simplify right side
    129,140.76x = 19,177,475,807.26
  5. Step 5: Solve for x
    x = 19,177,475,807.26/129,140.76
  6. Step 6: Final answer
    x = 148,500.56

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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.