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Finding the Fourth Proportional to 123,666.32, 170,530.44 and 73,355.60

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Solution

The fourth proportional to 123,666.32, 170,530.44 and 73,355.60 is: 101,154.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,666.32 : 170,530.44 = 73,355.60 : x
  2. Step 2: Convert to fraction form
    123,666.32/170,530.44 = 73,355.60/x
  3. Step 3: Cross multiply
    123,666.32x = 170,530.44 × 73,355.60
  4. Step 4: Simplify right side
    123,666.32x = 12,509,362,744.46
  5. Step 5: Solve for x
    x = 12,509,362,744.46/123,666.32
  6. Step 6: Final answer
    x = 101,154.16

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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.