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Finding the Fourth Proportional to 161,697,999.60, 242,546,999.40 and 80,889,807.60

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Solution

The fourth proportional to 161,697,999.60, 242,546,999.40 and 80,889,807.60 is: 121,334,711.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,697,999.60 : 242,546,999.40 = 80,889,807.60 : x
  2. Step 2: Convert to fraction form
    161,697,999.60/242,546,999.40 = 80,889,807.60/x
  3. Step 3: Cross multiply
    161,697,999.60x = 242,546,999.40 × 80,889,807.60
  4. Step 4: Simplify right side
    161,697,999.60x = 19,619,580,115,423,316
  5. Step 5: Solve for x
    x = 19,619,580,115,423,316/161,697,999.60
  6. Step 6: Final answer
    x = 121,334,711.40

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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.