Home / 207,172,378.60-310,795,892.70-86,016,077.80

Finding the Fourth Proportional to 207,172,378.60, 310,795,892.70 and 86,016,077.80

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Solution

The fourth proportional to 207,172,378.60, 310,795,892.70 and 86,016,077.80 is: 129,039,613.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,172,378.60 : 310,795,892.70 = 86,016,077.80 : x
  2. Step 2: Convert to fraction form
    207,172,378.60/310,795,892.70 = 86,016,077.80/x
  3. Step 3: Cross multiply
    207,172,378.60x = 310,795,892.70 × 86,016,077.80
  4. Step 4: Simplify right side
    207,172,378.60x = 26,733,443,686,403,652
  5. Step 5: Solve for x
    x = 26,733,443,686,403,652/207,172,378.60
  6. Step 6: Final answer
    x = 129,039,613.62

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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.