Home / 105,505.56-145,600.23-57,758.76

Finding the Fourth Proportional to 105,505.56, 145,600.23 and 57,758.76

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Solution

The fourth proportional to 105,505.56, 145,600.23 and 57,758.76 is: 79,708.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,505.56 : 145,600.23 = 57,758.76 : x
  2. Step 2: Convert to fraction form
    105,505.56/145,600.23 = 57,758.76/x
  3. Step 3: Cross multiply
    105,505.56x = 145,600.23 × 57,758.76
  4. Step 4: Simplify right side
    105,505.56x = 8,409,688,740.51
  5. Step 5: Solve for x
    x = 8,409,688,740.51/105,505.56
  6. Step 6: Final answer
    x = 79,708.49

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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.