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Finding the Fourth Proportional to 187,258.59, 280,958.59 and 112,430.90

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Solution

The fourth proportional to 187,258.59, 280,958.59 and 112,430.90 is: 168,688.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,258.59 : 280,958.59 = 112,430.90 : x
  2. Step 2: Convert to fraction form
    187,258.59/280,958.59 = 112,430.90/x
  3. Step 3: Cross multiply
    187,258.59x = 280,958.59 × 112,430.90
  4. Step 4: Simplify right side
    187,258.59x = 31,588,425,731.64
  5. Step 5: Solve for x
    x = 31,588,425,731.64/187,258.59
  6. Step 6: Final answer
    x = 168,688.79

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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.