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Finding the Fourth Proportional to 98,670.74, 136,074.74 and 64,666.84

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Solution

The fourth proportional to 98,670.74, 136,074.74 and 64,666.84 is: 89,180.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,670.74 : 136,074.74 = 64,666.84 : x
  2. Step 2: Convert to fraction form
    98,670.74/136,074.74 = 64,666.84/x
  3. Step 3: Cross multiply
    98,670.74x = 136,074.74 × 64,666.84
  4. Step 4: Simplify right side
    98,670.74x = 8,799,523,439.62
  5. Step 5: Solve for x
    x = 8,799,523,439.62/98,670.74
  6. Step 6: Final answer
    x = 89,180.68

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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.