Home / 136,555.50-188,444.70-76,131.12

Finding the Fourth Proportional to 136,555.50, 188,444.70 and 76,131.12

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Solution

The fourth proportional to 136,555.50, 188,444.70 and 76,131.12 is: 105,059.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,555.50 : 188,444.70 = 76,131.12 : x
  2. Step 2: Convert to fraction form
    136,555.50/188,444.70 = 76,131.12/x
  3. Step 3: Cross multiply
    136,555.50x = 188,444.70 × 76,131.12
  4. Step 4: Simplify right side
    136,555.50x = 14,346,506,069.06
  5. Step 5: Solve for x
    x = 14,346,506,069.06/136,555.50
  6. Step 6: Final answer
    x = 105,059.89

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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.