Home / 89,643,323.70-134,464,985.55-81,990,573.30

Finding the Fourth Proportional to 89,643,323.70, 134,464,985.55 and 81,990,573.30

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Solution

The fourth proportional to 89,643,323.70, 134,464,985.55 and 81,990,573.30 is: 122,985,859.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,643,323.70 : 134,464,985.55 = 81,990,573.30 : x
  2. Step 2: Convert to fraction form
    89,643,323.70/134,464,985.55 = 81,990,573.30/x
  3. Step 3: Cross multiply
    89,643,323.70x = 134,464,985.55 × 81,990,573.30
  4. Step 4: Simplify right side
    89,643,323.70x = 11,024,861,254,020,716
  5. Step 5: Solve for x
    x = 11,024,861,254,020,716/89,643,323.70
  6. Step 6: Final answer
    x = 122,985,859.95

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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.