Home / 102,000.20-153,000.30-91,113.80

Finding the Fourth Proportional to 102,000.20, 153,000.30 and 91,113.80

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Solution

The fourth proportional to 102,000.20, 153,000.30 and 91,113.80 is: 136,670.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,000.20 : 153,000.30 = 91,113.80 : x
  2. Step 2: Convert to fraction form
    102,000.20/153,000.30 = 91,113.80/x
  3. Step 3: Cross multiply
    102,000.20x = 153,000.30 × 91,113.80
  4. Step 4: Simplify right side
    102,000.20x = 13,940,438,734.14
  5. Step 5: Solve for x
    x = 13,940,438,734.14/102,000.20
  6. Step 6: Final answer
    x = 136,670.70

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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.