Home / 105,572.23-145,689.45-57,174.00

Finding the Fourth Proportional to 105,572.23, 145,689.45 and 57,174.00

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Solution

The fourth proportional to 105,572.23, 145,689.45 and 57,174.00 is: 78,900.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,572.23 : 145,689.45 = 57,174.00 : x
  2. Step 2: Convert to fraction form
    105,572.23/145,689.45 = 57,174.00/x
  3. Step 3: Cross multiply
    105,572.23x = 145,689.45 × 57,174.00
  4. Step 4: Simplify right side
    105,572.23x = 8,329,648,994.67
  5. Step 5: Solve for x
    x = 8,329,648,994.67/105,572.23
  6. Step 6: Final answer
    x = 78,900.00

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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.