Home / 103,045.20-154,567.80-53,108.70

Finding the Fourth Proportional to 103,045.20, 154,567.80 and 53,108.70

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Solution

The fourth proportional to 103,045.20, 154,567.80 and 53,108.70 is: 79,663.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,045.20 : 154,567.80 = 53,108.70 : x
  2. Step 2: Convert to fraction form
    103,045.20/154,567.80 = 53,108.70/x
  3. Step 3: Cross multiply
    103,045.20x = 154,567.80 × 53,108.70
  4. Step 4: Simplify right side
    103,045.20x = 8,208,894,919.86
  5. Step 5: Solve for x
    x = 8,208,894,919.86/103,045.20
  6. Step 6: Final answer
    x = 79,663.05

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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.