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Finding the Fourth Proportional to 106,762.64, 147,336.60 and 70,890.80

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Solution

The fourth proportional to 106,762.64, 147,336.60 and 70,890.80 is: 97,832.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,762.64 : 147,336.60 = 70,890.80 : x
  2. Step 2: Convert to fraction form
    106,762.64/147,336.60 = 70,890.80/x
  3. Step 3: Cross multiply
    106,762.64x = 147,336.60 × 70,890.80
  4. Step 4: Simplify right side
    106,762.64x = 10,444,809,443.28
  5. Step 5: Solve for x
    x = 10,444,809,443.28/106,762.64
  6. Step 6: Final answer
    x = 97,832.06

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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.