Home / 136,894.12-188,911.85-76,465.64

Finding the Fourth Proportional to 136,894.12, 188,911.85 and 76,465.64

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Solution

The fourth proportional to 136,894.12, 188,911.85 and 76,465.64 is: 105,521.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,894.12 : 188,911.85 = 76,465.64 : x
  2. Step 2: Convert to fraction form
    136,894.12/188,911.85 = 76,465.64/x
  3. Step 3: Cross multiply
    136,894.12x = 188,911.85 × 76,465.64
  4. Step 4: Simplify right side
    136,894.12x = 14,445,265,603.79
  5. Step 5: Solve for x
    x = 14,445,265,603.79/136,894.12
  6. Step 6: Final answer
    x = 105,521.45

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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.