Home / 112,881.80-155,778.69-61,899.19

Finding the Fourth Proportional to 112,881.80, 155,778.69 and 61,899.19

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Solution

The fourth proportional to 112,881.80, 155,778.69 and 61,899.19 is: 85,421.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,881.80 : 155,778.69 = 61,899.19 : x
  2. Step 2: Convert to fraction form
    112,881.80/155,778.69 = 61,899.19/x
  3. Step 3: Cross multiply
    112,881.80x = 155,778.69 × 61,899.19
  4. Step 4: Simplify right side
    112,881.80x = 9,642,574,572.94
  5. Step 5: Solve for x
    x = 9,642,574,572.94/112,881.80
  6. Step 6: Final answer
    x = 85,421.87

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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.