Home / 153,965,467.60-212,472,525-83,401,220.56

Finding the Fourth Proportional to 153,965,467.60, 212,472,525 and 83,401,220.56

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Solution

The fourth proportional to 153,965,467.60, 212,472,525 and 83,401,220.56 is: 115,093,781.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,965,467.60 : 212,472,525 = 83,401,220.56 : x
  2. Step 2: Convert to fraction form
    153,965,467.60/212,472,525 = 83,401,220.56/x
  3. Step 3: Cross multiply
    153,965,467.60x = 212,472,525 × 83,401,220.56
  4. Step 4: Simplify right side
    153,965,467.60x = 17,720,467,920,465,114
  5. Step 5: Solve for x
    x = 17,720,467,920,465,114/153,965,467.60
  6. Step 6: Final answer
    x = 115,093,781.72

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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.