Home / 154,290,386.35-231,458,165.76-72,417,580.96

Finding the Fourth Proportional to 154,290,386.35, 231,458,165.76 and 72,417,580.96

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Solution

The fourth proportional to 154,290,386.35, 231,458,165.76 and 72,417,580.96 is: 108,636,972.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,290,386.35 : 231,458,165.76 = 72,417,580.96 : x
  2. Step 2: Convert to fraction form
    154,290,386.35/231,458,165.76 = 72,417,580.96/x
  3. Step 3: Cross multiply
    154,290,386.35x = 231,458,165.76 × 72,417,580.96
  4. Step 4: Simplify right side
    154,290,386.35x = 16,761,640,457,777,898
  5. Step 5: Solve for x
    x = 16,761,640,457,777,898/154,290,386.35
  6. Step 6: Final answer
    x = 108,636,972.49

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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.