Home / 99,726.35-137,612.27-61,479.77

Finding the Fourth Proportional to 99,726.35, 137,612.27 and 61,479.77

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Solution

The fourth proportional to 99,726.35, 137,612.27 and 61,479.77 is: 84,835.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,726.35 : 137,612.27 = 61,479.77 : x
  2. Step 2: Convert to fraction form
    99,726.35/137,612.27 = 61,479.77/x
  3. Step 3: Cross multiply
    99,726.35x = 137,612.27 × 61,479.77
  4. Step 4: Simplify right side
    99,726.35x = 8,460,370,401.38
  5. Step 5: Solve for x
    x = 8,460,370,401.38/99,726.35
  6. Step 6: Final answer
    x = 84,835.86

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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.