Home / 154,985.76-213,888.51-86,999.22

Finding the Fourth Proportional to 154,985.76, 213,888.51 and 86,999.22

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Solution

The fourth proportional to 154,985.76, 213,888.51 and 86,999.22 is: 120,063.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,985.76 : 213,888.51 = 86,999.22 : x
  2. Step 2: Convert to fraction form
    154,985.76/213,888.51 = 86,999.22/x
  3. Step 3: Cross multiply
    154,985.76x = 213,888.51 × 86,999.22
  4. Step 4: Simplify right side
    154,985.76x = 18,608,133,536.96
  5. Step 5: Solve for x
    x = 18,608,133,536.96/154,985.76
  6. Step 6: Final answer
    x = 120,063.50

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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.