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Finding the Fourth Proportional to 102,549.20, 153,823.80 and 43,365.20

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Solution

The fourth proportional to 102,549.20, 153,823.80 and 43,365.20 is: 65,047.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,549.20 : 153,823.80 = 43,365.20 : x
  2. Step 2: Convert to fraction form
    102,549.20/153,823.80 = 43,365.20/x
  3. Step 3: Cross multiply
    102,549.20x = 153,823.80 × 43,365.20
  4. Step 4: Simplify right side
    102,549.20x = 6,670,599,851.76
  5. Step 5: Solve for x
    x = 6,670,599,851.76/102,549.20
  6. Step 6: Final answer
    x = 65,047.80

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1.5x scale

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.