Home / 145,396.27-218,129.26-70,428.80

Finding the Fourth Proportional to 145,396.27, 218,129.26 and 70,428.80

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Solution

The fourth proportional to 145,396.27, 218,129.26 and 70,428.80 is: 105,660.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,396.27 : 218,129.26 = 70,428.80 : x
  2. Step 2: Convert to fraction form
    145,396.27/218,129.26 = 70,428.80/x
  3. Step 3: Cross multiply
    145,396.27x = 218,129.26 × 70,428.80
  4. Step 4: Simplify right side
    145,396.27x = 15,362,580,759.97
  5. Step 5: Solve for x
    x = 15,362,580,759.97/145,396.27
  6. Step 6: Final answer
    x = 105,660.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.