Home / 88,813.40-133,220.10-76,890.20

Finding the Fourth Proportional to 88,813.40, 133,220.10 and 76,890.20

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Solution

The fourth proportional to 88,813.40, 133,220.10 and 76,890.20 is: 115,335.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,813.40 : 133,220.10 = 76,890.20 : x
  2. Step 2: Convert to fraction form
    88,813.40/133,220.10 = 76,890.20/x
  3. Step 3: Cross multiply
    88,813.40x = 133,220.10 × 76,890.20
  4. Step 4: Simplify right side
    88,813.40x = 10,243,320,133.02
  5. Step 5: Solve for x
    x = 10,243,320,133.02/88,813.40
  6. Step 6: Final answer
    x = 115,335.30

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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.