Home / 112,698.18-155,515.14-61,699.77

Finding the Fourth Proportional to 112,698.18, 155,515.14 and 61,699.77

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Solution

The fourth proportional to 112,698.18, 155,515.14 and 61,699.77 is: 85,141.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,698.18 : 155,515.14 = 61,699.77 : x
  2. Step 2: Convert to fraction form
    112,698.18/155,515.14 = 61,699.77/x
  3. Step 3: Cross multiply
    112,698.18x = 155,515.14 × 61,699.77
  4. Step 4: Simplify right side
    112,698.18x = 9,595,248,369.52
  5. Step 5: Solve for x
    x = 9,595,248,369.52/112,698.18
  6. Step 6: Final answer
    x = 85,141.11

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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.