Home / 90,221,115.28-124,026,485.53-77,616,171.76

Finding the Fourth Proportional to 90,221,115.28, 124,026,485.53 and 77,616,171.76

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Solution

The fourth proportional to 90,221,115.28, 124,026,485.53 and 77,616,171.76 is: 106,698,536.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,221,115.28 : 124,026,485.53 = 77,616,171.76 : x
  2. Step 2: Convert to fraction form
    90,221,115.28/124,026,485.53 = 77,616,171.76/x
  3. Step 3: Cross multiply
    90,221,115.28x = 124,026,485.53 × 77,616,171.76
  4. Step 4: Simplify right side
    90,221,115.28x = 9,626,461,003,685,636
  5. Step 5: Solve for x
    x = 9,626,461,003,685,636/90,221,115.28
  6. Step 6: Final answer
    x = 106,698,536.96

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.