Home / 113,385.10-169,969.65-42,288.70

Finding the Fourth Proportional to 113,385.10, 169,969.65 and 42,288.70

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Solution

The fourth proportional to 113,385.10, 169,969.65 and 42,288.70 is: 63,392.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,385.10 : 169,969.65 = 42,288.70 : x
  2. Step 2: Convert to fraction form
    113,385.10/169,969.65 = 42,288.70/x
  3. Step 3: Cross multiply
    113,385.10x = 169,969.65 × 42,288.70
  4. Step 4: Simplify right side
    113,385.10x = 7,187,795,537.96
  5. Step 5: Solve for x
    x = 7,187,795,537.96/113,385.10
  6. Step 6: Final answer
    x = 63,392.77

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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.