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Finding the Fourth Proportional to 112,507.50, 155,260.50 and 61,520.45

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Solution

The fourth proportional to 112,507.50, 155,260.50 and 61,520.45 is: 84,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,507.50 : 155,260.50 = 61,520.45 : x
  2. Step 2: Convert to fraction form
    112,507.50/155,260.50 = 61,520.45/x
  3. Step 3: Cross multiply
    112,507.50x = 155,260.50 × 61,520.45
  4. Step 4: Simplify right side
    112,507.50x = 9,551,695,050.92
  5. Step 5: Solve for x
    x = 9,551,695,050.92/112,507.50
  6. Step 6: Final answer
    x = 84,898.30

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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.