Home / 137,627.28-189,946.92-77,222.34

Finding the Fourth Proportional to 137,627.28, 189,946.92 and 77,222.34

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Solution

The fourth proportional to 137,627.28, 189,946.92 and 77,222.34 is: 106,578.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,627.28 : 189,946.92 = 77,222.34 : x
  2. Step 2: Convert to fraction form
    137,627.28/189,946.92 = 77,222.34/x
  3. Step 3: Cross multiply
    137,627.28x = 189,946.92 × 77,222.34
  4. Step 4: Simplify right side
    137,627.28x = 14,668,145,638.19
  5. Step 5: Solve for x
    x = 14,668,145,638.19/137,627.28
  6. Step 6: Final answer
    x = 106,578.77

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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.