Home / 105,248.79-145,245.42-57,505.10

Finding the Fourth Proportional to 105,248.79, 145,245.42 and 57,505.10

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Solution

The fourth proportional to 105,248.79, 145,245.42 and 57,505.10 is: 79,358.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,248.79 : 145,245.42 = 57,505.10 : x
  2. Step 2: Convert to fraction form
    105,248.79/145,245.42 = 57,505.10/x
  3. Step 3: Cross multiply
    105,248.79x = 145,245.42 × 57,505.10
  4. Step 4: Simplify right side
    105,248.79x = 8,352,351,675.41
  5. Step 5: Solve for x
    x = 8,352,351,675.41/105,248.79
  6. Step 6: Final answer
    x = 79,358.17

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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.