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Finding the Fourth Proportional to 98,697.30, 136,205.82 and 56,248.98

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Solution

The fourth proportional to 98,697.30, 136,205.82 and 56,248.98 is: 77,625.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,697.30 : 136,205.82 = 56,248.98 : x
  2. Step 2: Convert to fraction form
    98,697.30/136,205.82 = 56,248.98/x
  3. Step 3: Cross multiply
    98,697.30x = 136,205.82 × 56,248.98
  4. Step 4: Simplify right side
    98,697.30x = 7,661,438,445.06
  5. Step 5: Solve for x
    x = 7,661,438,445.06/98,697.30
  6. Step 6: Final answer
    x = 77,625.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.