Home / 102,530.20-153,503.70-79,007.80

Finding the Fourth Proportional to 102,530.20, 153,503.70 and 79,007.80

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Solution

The fourth proportional to 102,530.20, 153,503.70 and 79,007.80 is: 118,287.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,530.20 : 153,503.70 = 79,007.80 : x
  2. Step 2: Convert to fraction form
    102,530.20/153,503.70 = 79,007.80/x
  3. Step 3: Cross multiply
    102,530.20x = 153,503.70 × 79,007.80
  4. Step 4: Simplify right side
    102,530.20x = 12,127,989,628.86
  5. Step 5: Solve for x
    x = 12,127,989,628.86/102,530.20
  6. Step 6: Final answer
    x = 118,287.00

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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.