Home / 136,785.15-188,848.86-88,412.40

Finding the Fourth Proportional to 136,785.15, 188,848.86 and 88,412.40

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Solution

The fourth proportional to 136,785.15, 188,848.86 and 88,412.40 is: 122,064.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,785.15 : 188,848.86 = 88,412.40 : x
  2. Step 2: Convert to fraction form
    136,785.15/188,848.86 = 88,412.40/x
  3. Step 3: Cross multiply
    136,785.15x = 188,848.86 × 88,412.40
  4. Step 4: Simplify right side
    136,785.15x = 16,696,580,949.86
  5. Step 5: Solve for x
    x = 16,696,580,949.86/136,785.15
  6. Step 6: Final answer
    x = 122,064.28

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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.