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Finding the Fourth Proportional to 104,726.98, 144,518.91 and 56,980.51

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Solution

The fourth proportional to 104,726.98, 144,518.91 and 56,980.51 is: 78,630.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,726.98 : 144,518.91 = 56,980.51 : x
  2. Step 2: Convert to fraction form
    104,726.98/144,518.91 = 56,980.51/x
  3. Step 3: Cross multiply
    104,726.98x = 144,518.91 × 56,980.51
  4. Step 4: Simplify right side
    104,726.98x = 8,234,761,594.65
  5. Step 5: Solve for x
    x = 8,234,761,594.65/104,726.98
  6. Step 6: Final answer
    x = 78,630.76

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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.