Home / 129,034,710.56-178,021,190.46-84,406,156.81

Finding the Fourth Proportional to 129,034,710.56, 178,021,190.46 and 84,406,156.81

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Solution

The fourth proportional to 129,034,710.56, 178,021,190.46 and 84,406,156.81 is: 116,449,941.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,034,710.56 : 178,021,190.46 = 84,406,156.81 : x
  2. Step 2: Convert to fraction form
    129,034,710.56/178,021,190.46 = 84,406,156.81/x
  3. Step 3: Cross multiply
    129,034,710.56x = 178,021,190.46 × 84,406,156.81
  4. Step 4: Simplify right side
    129,034,710.56x = 15,026,084,516,704,052
  5. Step 5: Solve for x
    x = 15,026,084,516,704,052/129,034,710.56
  6. Step 6: Final answer
    x = 116,449,941.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.