Home / 103,509.18-155,225.61-36,931.50

Finding the Fourth Proportional to 103,509.18, 155,225.61 and 36,931.50

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Solution

The fourth proportional to 103,509.18, 155,225.61 and 36,931.50 is: 55,383.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,509.18 : 155,225.61 = 36,931.50 : x
  2. Step 2: Convert to fraction form
    103,509.18/155,225.61 = 36,931.50/x
  3. Step 3: Cross multiply
    103,509.18x = 155,225.61 × 36,931.50
  4. Step 4: Simplify right side
    103,509.18x = 5,732,714,615.72
  5. Step 5: Solve for x
    x = 5,732,714,615.72/103,509.18
  6. Step 6: Final answer
    x = 55,383.63

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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.