Home / 89,858,669.40-134,788,004.10-86,331,475.80

Finding the Fourth Proportional to 89,858,669.40, 134,788,004.10 and 86,331,475.80

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Solution

The fourth proportional to 89,858,669.40, 134,788,004.10 and 86,331,475.80 is: 129,497,213.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,858,669.40 : 134,788,004.10 = 86,331,475.80 : x
  2. Step 2: Convert to fraction form
    89,858,669.40/134,788,004.10 = 86,331,475.80/x
  3. Step 3: Cross multiply
    89,858,669.40x = 134,788,004.10 × 86,331,475.80
  4. Step 4: Simplify right side
    89,858,669.40x = 11,636,447,314,089,450
  5. Step 5: Solve for x
    x = 11,636,447,314,089,450/89,858,669.40
  6. Step 6: Final answer
    x = 129,497,213.70

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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.