Home / 161,696,979.90-242,555,967.45-85,169,475.90

Finding the Fourth Proportional to 161,696,979.90, 242,555,967.45 and 85,169,475.90

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Solution

The fourth proportional to 161,696,979.90, 242,555,967.45 and 85,169,475.90 is: 127,759,743.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,696,979.90 : 242,555,967.45 = 85,169,475.90 : x
  2. Step 2: Convert to fraction form
    161,696,979.90/242,555,967.45 = 85,169,475.90/x
  3. Step 3: Cross multiply
    161,696,979.90x = 242,555,967.45 × 85,169,475.90
  4. Step 4: Simplify right side
    161,696,979.90x = 20,658,364,624,133,960
  5. Step 5: Solve for x
    x = 20,658,364,624,133,960/161,696,979.90
  6. Step 6: Final answer
    x = 127,759,743.17

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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.