Home / 101,765.23-140,436.81-56,440.69

Finding the Fourth Proportional to 101,765.23, 140,436.81 and 56,440.69

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Solution

The fourth proportional to 101,765.23, 140,436.81 and 56,440.69 is: 77,888.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,765.23 : 140,436.81 = 56,440.69 : x
  2. Step 2: Convert to fraction form
    101,765.23/140,436.81 = 56,440.69/x
  3. Step 3: Cross multiply
    101,765.23x = 140,436.81 × 56,440.69
  4. Step 4: Simplify right side
    101,765.23x = 7,926,350,457.80
  5. Step 5: Solve for x
    x = 7,926,350,457.80/101,765.23
  6. Step 6: Final answer
    x = 77,888.59

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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.