Home / 127,875.40-191,813.10-81,334.60

Finding the Fourth Proportional to 127,875.40, 191,813.10 and 81,334.60

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Solution

The fourth proportional to 127,875.40, 191,813.10 and 81,334.60 is: 122,001.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,875.40 : 191,813.10 = 81,334.60 : x
  2. Step 2: Convert to fraction form
    127,875.40/191,813.10 = 81,334.60/x
  3. Step 3: Cross multiply
    127,875.40x = 191,813.10 × 81,334.60
  4. Step 4: Simplify right side
    127,875.40x = 15,601,041,763.26
  5. Step 5: Solve for x
    x = 15,601,041,763.26/127,875.40
  6. Step 6: Final answer
    x = 122,001.90

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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.