Home / 158,627.68-218,946-107,726.56

Finding the Fourth Proportional to 158,627.68, 218,946 and 107,726.56

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Solution

The fourth proportional to 158,627.68, 218,946 and 107,726.56 is: 148,689.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,627.68 : 218,946 = 107,726.56 : x
  2. Step 2: Convert to fraction form
    158,627.68/218,946 = 107,726.56/x
  3. Step 3: Cross multiply
    158,627.68x = 218,946 × 107,726.56
  4. Step 4: Simplify right side
    158,627.68x = 23,586,299,405.76
  5. Step 5: Solve for x
    x = 23,586,299,405.76/158,627.68
  6. Step 6: Final answer
    x = 148,689.68

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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.