Home / 136,612.66-188,526.28-76,187.12

Finding the Fourth Proportional to 136,612.66, 188,526.28 and 76,187.12

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Solution

The fourth proportional to 136,612.66, 188,526.28 and 76,187.12 is: 105,138.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,612.66 : 188,526.28 = 76,187.12 : x
  2. Step 2: Convert to fraction form
    136,612.66/188,526.28 = 76,187.12/x
  3. Step 3: Cross multiply
    136,612.66x = 188,526.28 × 76,187.12
  4. Step 4: Simplify right side
    136,612.66x = 14,363,274,317.51
  5. Step 5: Solve for x
    x = 14,363,274,317.51/136,612.66
  6. Step 6: Final answer
    x = 105,138.68

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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.