Home / 103,638.86-155,541.18-53,733.14

Finding the Fourth Proportional to 103,638.86, 155,541.18 and 53,733.14

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Solution

The fourth proportional to 103,638.86, 155,541.18 and 53,733.14 is: 80,642.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,638.86 : 155,541.18 = 53,733.14 : x
  2. Step 2: Convert to fraction form
    103,638.86/155,541.18 = 53,733.14/x
  3. Step 3: Cross multiply
    103,638.86x = 155,541.18 × 53,733.14
  4. Step 4: Simplify right side
    103,638.86x = 8,357,716,000.71
  5. Step 5: Solve for x
    x = 8,357,716,000.71/103,638.86
  6. Step 6: Final answer
    x = 80,642.69

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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.