Home / 161,877.40-242,816.10-128,416.30

Finding the Fourth Proportional to 161,877.40, 242,816.10 and 128,416.30

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Solution

The fourth proportional to 161,877.40, 242,816.10 and 128,416.30 is: 192,624.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,877.40 : 242,816.10 = 128,416.30 : x
  2. Step 2: Convert to fraction form
    161,877.40/242,816.10 = 128,416.30/x
  3. Step 3: Cross multiply
    161,877.40x = 242,816.10 × 128,416.30
  4. Step 4: Simplify right side
    161,877.40x = 31,181,545,142.43
  5. Step 5: Solve for x
    x = 31,181,545,142.43/161,877.40
  6. Step 6: Final answer
    x = 192,624.45

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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.