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Finding the Fourth Proportional to 112,710.96, 155,518.84 and 64,311.84

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Solution

The fourth proportional to 112,710.96, 155,518.84 and 64,311.84 is: 88,737.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,710.96 : 155,518.84 = 64,311.84 : x
  2. Step 2: Convert to fraction form
    112,710.96/155,518.84 = 64,311.84/x
  3. Step 3: Cross multiply
    112,710.96x = 155,518.84 × 64,311.84
  4. Step 4: Simplify right side
    112,710.96x = 10,001,702,755.07
  5. Step 5: Solve for x
    x = 10,001,702,755.07/112,710.96
  6. Step 6: Final answer
    x = 88,737.62

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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.