Home / 112,161.60-154,784.16-61,865.28

Finding the Fourth Proportional to 112,161.60, 154,784.16 and 61,865.28

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Solution

The fourth proportional to 112,161.60, 154,784.16 and 61,865.28 is: 85,374.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,161.60 : 154,784.16 = 61,865.28 : x
  2. Step 2: Convert to fraction form
    112,161.60/154,784.16 = 61,865.28/x
  3. Step 3: Cross multiply
    112,161.60x = 154,784.16 × 61,865.28
  4. Step 4: Simplify right side
    112,161.60x = 9,575,765,397.96
  5. Step 5: Solve for x
    x = 9,575,765,397.96/112,161.60
  6. Step 6: Final answer
    x = 85,374.72

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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.