Home / 155,161.77-214,148.19-145,031.22

Finding the Fourth Proportional to 155,161.77, 214,148.19 and 145,031.22

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Solution

The fourth proportional to 155,161.77, 214,148.19 and 145,031.22 is: 200,166.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,161.77 : 214,148.19 = 145,031.22 : x
  2. Step 2: Convert to fraction form
    155,161.77/214,148.19 = 145,031.22/x
  3. Step 3: Cross multiply
    155,161.77x = 214,148.19 × 145,031.22
  4. Step 4: Simplify right side
    155,161.77x = 31,058,173,256.49
  5. Step 5: Solve for x
    x = 31,058,173,256.49/155,161.77
  6. Step 6: Final answer
    x = 200,166.40

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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.