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Finding the Fourth Proportional to 102,000.10, 153,000.15 and 31,879.30

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Solution

The fourth proportional to 102,000.10, 153,000.15 and 31,879.30 is: 47,818.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,000.10 : 153,000.15 = 31,879.30 : x
  2. Step 2: Convert to fraction form
    102,000.10/153,000.15 = 31,879.30/x
  3. Step 3: Cross multiply
    102,000.10x = 153,000.15 × 31,879.30
  4. Step 4: Simplify right side
    102,000.10x = 4,877,537,681.90
  5. Step 5: Solve for x
    x = 4,877,537,681.90/102,000.10
  6. Step 6: Final answer
    x = 47,818.95

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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.