Home / 117,569.99-162,293.12-81,780.77

Finding the Fourth Proportional to 117,569.99, 162,293.12 and 81,780.77

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Solution

The fourth proportional to 117,569.99, 162,293.12 and 81,780.77 is: 112,889.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,569.99 : 162,293.12 = 81,780.77 : x
  2. Step 2: Convert to fraction form
    117,569.99/162,293.12 = 81,780.77/x
  3. Step 3: Cross multiply
    117,569.99x = 162,293.12 × 81,780.77
  4. Step 4: Simplify right side
    117,569.99x = 13,272,455,098.93
  5. Step 5: Solve for x
    x = 13,272,455,098.93/117,569.99
  6. Step 6: Final answer
    x = 112,889.83

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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.