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Finding the Fourth Proportional to 173,987.12, 260,980.70 and 42,659.12

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Solution

The fourth proportional to 173,987.12, 260,980.70 and 42,659.12 is: 63,988.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,987.12 : 260,980.70 = 42,659.12 : x
  2. Step 2: Convert to fraction form
    173,987.12/260,980.70 = 42,659.12/x
  3. Step 3: Cross multiply
    173,987.12x = 260,980.70 × 42,659.12
  4. Step 4: Simplify right side
    173,987.12x = 11,133,206,998.98
  5. Step 5: Solve for x
    x = 11,133,206,998.98/173,987.12
  6. Step 6: Final answer
    x = 63,988.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.