Home / 154,401.07-213,024.90-86,407.24

Finding the Fourth Proportional to 154,401.07, 213,024.90 and 86,407.24

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Solution

The fourth proportional to 154,401.07, 213,024.90 and 86,407.24 is: 119,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,401.07 : 213,024.90 = 86,407.24 : x
  2. Step 2: Convert to fraction form
    154,401.07/213,024.90 = 86,407.24/x
  3. Step 3: Cross multiply
    154,401.07x = 213,024.90 × 86,407.24
  4. Step 4: Simplify right side
    154,401.07x = 18,406,892,587.93
  5. Step 5: Solve for x
    x = 18,406,892,587.93/154,401.07
  6. Step 6: Final answer
    x = 119,214.80

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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.