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Finding the Fourth Proportional to 161,921.40, 242,882.10 and 56,726.70

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Solution

The fourth proportional to 161,921.40, 242,882.10 and 56,726.70 is: 85,090.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,921.40 : 242,882.10 = 56,726.70 : x
  2. Step 2: Convert to fraction form
    161,921.40/242,882.10 = 56,726.70/x
  3. Step 3: Cross multiply
    161,921.40x = 242,882.10 × 56,726.70
  4. Step 4: Simplify right side
    161,921.40x = 13,777,900,022.07
  5. Step 5: Solve for x
    x = 13,777,900,022.07/161,921.40
  6. Step 6: Final answer
    x = 85,090.05

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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.