Home / 81,688,643.10-122,532,964.65-75,453,068.70

Finding the Fourth Proportional to 81,688,643.10, 122,532,964.65 and 75,453,068.70

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Solution

The fourth proportional to 81,688,643.10, 122,532,964.65 and 75,453,068.70 is: 113,179,603.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688,643.10 : 122,532,964.65 = 75,453,068.70 : x
  2. Step 2: Convert to fraction form
    81,688,643.10/122,532,964.65 = 75,453,068.70/x
  3. Step 3: Cross multiply
    81,688,643.10x = 122,532,964.65 × 75,453,068.70
  4. Step 4: Simplify right side
    81,688,643.10x = 9,245,488,199,751,122
  5. Step 5: Solve for x
    x = 9,245,488,199,751,122/81,688,643.10
  6. Step 6: Final answer
    x = 113,179,603.05

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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.