Home / 157,401.90-217,208.30-85,780.40

Finding the Fourth Proportional to 157,401.90, 217,208.30 and 85,780.40

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Solution

The fourth proportional to 157,401.90, 217,208.30 and 85,780.40 is: 118,373.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,401.90 : 217,208.30 = 85,780.40 : x
  2. Step 2: Convert to fraction form
    157,401.90/217,208.30 = 85,780.40/x
  3. Step 3: Cross multiply
    157,401.90x = 217,208.30 × 85,780.40
  4. Step 4: Simplify right side
    157,401.90x = 18,632,214,857.32
  5. Step 5: Solve for x
    x = 18,632,214,857.32/157,401.90
  6. Step 6: Final answer
    x = 118,373.51

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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.