Home / 105,211.46-145,191.81-57,464.92

Finding the Fourth Proportional to 105,211.46, 145,191.81 and 57,464.92

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Solution

The fourth proportional to 105,211.46, 145,191.81 and 57,464.92 is: 79,301.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,211.46 : 145,191.81 = 57,464.92 : x
  2. Step 2: Convert to fraction form
    105,211.46/145,191.81 = 57,464.92/x
  3. Step 3: Cross multiply
    105,211.46x = 145,191.81 × 57,464.92
  4. Step 4: Simplify right side
    105,211.46x = 8,343,435,746.31
  5. Step 5: Solve for x
    x = 8,343,435,746.31/105,211.46
  6. Step 6: Final answer
    x = 79,301.59

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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.