Home / 136,887.40-205,484.70-105,860.20

Finding the Fourth Proportional to 136,887.40, 205,484.70 and 105,860.20

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Solution

The fourth proportional to 136,887.40, 205,484.70 and 105,860.20 is: 158,909.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,887.40 : 205,484.70 = 105,860.20 : x
  2. Step 2: Convert to fraction form
    136,887.40/205,484.70 = 105,860.20/x
  3. Step 3: Cross multiply
    136,887.40x = 205,484.70 × 105,860.20
  4. Step 4: Simplify right side
    136,887.40x = 21,752,651,438.94
  5. Step 5: Solve for x
    x = 21,752,651,438.94/136,887.40
  6. Step 6: Final answer
    x = 158,909.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.