Home / 136,740.75-188,711.70-76,323.15

Finding the Fourth Proportional to 136,740.75, 188,711.70 and 76,323.15

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Solution

The fourth proportional to 136,740.75, 188,711.70 and 76,323.15 is: 105,331.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,740.75 : 188,711.70 = 76,323.15 : x
  2. Step 2: Convert to fraction form
    136,740.75/188,711.70 = 76,323.15/x
  3. Step 3: Cross multiply
    136,740.75x = 188,711.70 × 76,323.15
  4. Step 4: Simplify right side
    136,740.75x = 14,403,071,385.86
  5. Step 5: Solve for x
    x = 14,403,071,385.86/136,740.75
  6. Step 6: Final answer
    x = 105,331.23

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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.