Home / 136,543.40-188,430.82-76,117.88

Finding the Fourth Proportional to 136,543.40, 188,430.82 and 76,117.88

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Solution

The fourth proportional to 136,543.40, 188,430.82 and 76,117.88 is: 105,043.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,543.40 : 188,430.82 = 76,117.88 : x
  2. Step 2: Convert to fraction form
    136,543.40/188,430.82 = 76,117.88/x
  3. Step 3: Cross multiply
    136,543.40x = 188,430.82 × 76,117.88
  4. Step 4: Simplify right side
    136,543.40x = 14,342,954,545.06
  5. Step 5: Solve for x
    x = 14,342,954,545.06/136,543.40
  6. Step 6: Final answer
    x = 105,043.19

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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.