Home / 99,981.63-137,976.30-59,698.91

Finding the Fourth Proportional to 99,981.63, 137,976.30 and 59,698.91

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Solution

The fourth proportional to 99,981.63, 137,976.30 and 59,698.91 is: 82,385.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,981.63 : 137,976.30 = 59,698.91 : x
  2. Step 2: Convert to fraction form
    99,981.63/137,976.30 = 59,698.91/x
  3. Step 3: Cross multiply
    99,981.63x = 137,976.30 × 59,698.91
  4. Step 4: Simplify right side
    99,981.63x = 8,237,035,060.77
  5. Step 5: Solve for x
    x = 8,237,035,060.77/99,981.63
  6. Step 6: Final answer
    x = 82,385.48

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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.