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Finding the Fourth Proportional to 173,446.91, 239,430.51 and 105,485.71

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Solution

The fourth proportional to 173,446.91, 239,430.51 and 105,485.71 is: 145,615.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,446.91 : 239,430.51 = 105,485.71 : x
  2. Step 2: Convert to fraction form
    173,446.91/239,430.51 = 105,485.71/x
  3. Step 3: Cross multiply
    173,446.91x = 239,430.51 × 105,485.71
  4. Step 4: Simplify right side
    173,446.91x = 25,256,496,744.44
  5. Step 5: Solve for x
    x = 25,256,496,744.44/173,446.91
  6. Step 6: Final answer
    x = 145,615.15

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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.