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Finding the Fourth Proportional to 115,157.92, 158,985.36 and 75,483.04

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Solution

The fourth proportional to 115,157.92, 158,985.36 and 75,483.04 is: 104,210.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,157.92 : 158,985.36 = 75,483.04 : x
  2. Step 2: Convert to fraction form
    115,157.92/158,985.36 = 75,483.04/x
  3. Step 3: Cross multiply
    115,157.92x = 158,985.36 × 75,483.04
  4. Step 4: Simplify right side
    115,157.92x = 12,000,698,288.29
  5. Step 5: Solve for x
    x = 12,000,698,288.29/115,157.92
  6. Step 6: Final answer
    x = 104,210.79

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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.