Home / 103,638.40-155,457.60-96,726.40

Finding the Fourth Proportional to 103,638.40, 155,457.60 and 96,726.40

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Solution

The fourth proportional to 103,638.40, 155,457.60 and 96,726.40 is: 145,089.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.40 : 155,457.60 = 96,726.40 : x
  2. Step 2: Convert to fraction form
    103,638.40/155,457.60 = 96,726.40/x
  3. Step 3: Cross multiply
    103,638.40x = 155,457.60 × 96,726.40
  4. Step 4: Simplify right side
    103,638.40x = 15,036,854,000.64
  5. Step 5: Solve for x
    x = 15,036,854,000.64/103,638.40
  6. Step 6: Final answer
    x = 145,089.60

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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.