Home / 99,442.71-149,164.07-81,875.63

Finding the Fourth Proportional to 99,442.71, 149,164.07 and 81,875.63

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Solution

The fourth proportional to 99,442.71, 149,164.07 and 81,875.63 is: 122,813.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,442.71 : 149,164.07 = 81,875.63 : x
  2. Step 2: Convert to fraction form
    99,442.71/149,164.07 = 81,875.63/x
  3. Step 3: Cross multiply
    99,442.71x = 149,164.07 × 81,875.63
  4. Step 4: Simplify right side
    99,442.71x = 12,212,902,168.15
  5. Step 5: Solve for x
    x = 12,212,902,168.15/99,442.71
  6. Step 6: Final answer
    x = 122,813.45

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1.5x scale

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.