Home / 97,877.20-146,815.80-81,270.40

Finding the Fourth Proportional to 97,877.20, 146,815.80 and 81,270.40

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Solution

The fourth proportional to 97,877.20, 146,815.80 and 81,270.40 is: 121,905.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,877.20 : 146,815.80 = 81,270.40 : x
  2. Step 2: Convert to fraction form
    97,877.20/146,815.80 = 81,270.40/x
  3. Step 3: Cross multiply
    97,877.20x = 146,815.80 × 81,270.40
  4. Step 4: Simplify right side
    97,877.20x = 11,931,778,792.32
  5. Step 5: Solve for x
    x = 11,931,778,792.32/97,877.20
  6. Step 6: Final answer
    x = 121,905.60

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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.