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Finding the Fourth Proportional to 108,554.40, 162,831.60 and 97,840.80

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Solution

The fourth proportional to 108,554.40, 162,831.60 and 97,840.80 is: 146,761.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,554.40 : 162,831.60 = 97,840.80 : x
  2. Step 2: Convert to fraction form
    108,554.40/162,831.60 = 97,840.80/x
  3. Step 3: Cross multiply
    108,554.40x = 162,831.60 × 97,840.80
  4. Step 4: Simplify right side
    108,554.40x = 15,931,574,009.28
  5. Step 5: Solve for x
    x = 15,931,574,009.28/108,554.40
  6. Step 6: Final answer
    x = 146,761.20

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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.