Home / 136,864.80-205,297.20-77,882.40

Finding the Fourth Proportional to 136,864.80, 205,297.20 and 77,882.40

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Solution

The fourth proportional to 136,864.80, 205,297.20 and 77,882.40 is: 116,823.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,864.80 : 205,297.20 = 77,882.40 : x
  2. Step 2: Convert to fraction form
    136,864.80/205,297.20 = 77,882.40/x
  3. Step 3: Cross multiply
    136,864.80x = 205,297.20 × 77,882.40
  4. Step 4: Simplify right side
    136,864.80x = 15,989,038,649.28
  5. Step 5: Solve for x
    x = 15,989,038,649.28/136,864.80
  6. Step 6: Final answer
    x = 116,823.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.