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Finding the Fourth Proportional to 98,767.56, 136,300.32 and 56,328.60

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Solution

The fourth proportional to 98,767.56, 136,300.32 and 56,328.60 is: 77,734.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,767.56 : 136,300.32 = 56,328.60 : x
  2. Step 2: Convert to fraction form
    98,767.56/136,300.32 = 56,328.60/x
  3. Step 3: Cross multiply
    98,767.56x = 136,300.32 × 56,328.60
  4. Step 4: Simplify right side
    98,767.56x = 7,677,606,205.15
  5. Step 5: Solve for x
    x = 7,677,606,205.15/98,767.56
  6. Step 6: Final answer
    x = 77,734.09

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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.