Home / 105,128.42-157,713.40-38,569.10

Finding the Fourth Proportional to 105,128.42, 157,713.40 and 38,569.10

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Solution

The fourth proportional to 105,128.42, 157,713.40 and 38,569.10 is: 57,861.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,128.42 : 157,713.40 = 38,569.10 : x
  2. Step 2: Convert to fraction form
    105,128.42/157,713.40 = 38,569.10/x
  3. Step 3: Cross multiply
    105,128.42x = 157,713.40 × 38,569.10
  4. Step 4: Simplify right side
    105,128.42x = 6,082,863,895.94
  5. Step 5: Solve for x
    x = 6,082,863,895.94/105,128.42
  6. Step 6: Final answer
    x = 57,861.27

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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.