Home / 136,316.60-188,112.30-76,689.08

Finding the Fourth Proportional to 136,316.60, 188,112.30 and 76,689.08

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Solution

The fourth proportional to 136,316.60, 188,112.30 and 76,689.08 is: 105,828.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,316.60 : 188,112.30 = 76,689.08 : x
  2. Step 2: Convert to fraction form
    136,316.60/188,112.30 = 76,689.08/x
  3. Step 3: Cross multiply
    136,316.60x = 188,112.30 × 76,689.08
  4. Step 4: Simplify right side
    136,316.60x = 14,426,159,223.68
  5. Step 5: Solve for x
    x = 14,426,159,223.68/136,316.60
  6. Step 6: Final answer
    x = 105,828.34

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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.