Home / 102,002.20-153,003.30-70,509.40

Finding the Fourth Proportional to 102,002.20, 153,003.30 and 70,509.40

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Solution

The fourth proportional to 102,002.20, 153,003.30 and 70,509.40 is: 105,764.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,002.20 : 153,003.30 = 70,509.40 : x
  2. Step 2: Convert to fraction form
    102,002.20/153,003.30 = 70,509.40/x
  3. Step 3: Cross multiply
    102,002.20x = 153,003.30 × 70,509.40
  4. Step 4: Simplify right side
    102,002.20x = 10,788,170,881.02
  5. Step 5: Solve for x
    x = 10,788,170,881.02/102,002.20
  6. Step 6: Final answer
    x = 105,764.10

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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.