Home / 153,192.32-211,401.28-86,128.64

Finding the Fourth Proportional to 153,192.32, 211,401.28 and 86,128.64

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Solution

The fourth proportional to 153,192.32, 211,401.28 and 86,128.64 is: 118,855.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,192.32 : 211,401.28 = 86,128.64 : x
  2. Step 2: Convert to fraction form
    153,192.32/211,401.28 = 86,128.64/x
  3. Step 3: Cross multiply
    153,192.32x = 211,401.28 × 86,128.64
  4. Step 4: Simplify right side
    153,192.32x = 18,207,704,740.66
  5. Step 5: Solve for x
    x = 18,207,704,740.66/153,192.32
  6. Step 6: Final answer
    x = 118,855.21

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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.