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Finding the Fourth Proportional to 173,478.74, 239,409.69 and 105,484.64

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Solution

The fourth proportional to 173,478.74, 239,409.69 and 105,484.64 is: 145,574.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,478.74 : 239,409.69 = 105,484.64 : x
  2. Step 2: Convert to fraction form
    173,478.74/239,409.69 = 105,484.64/x
  3. Step 3: Cross multiply
    173,478.74x = 239,409.69 × 105,484.64
  4. Step 4: Simplify right side
    173,478.74x = 25,254,044,962.16
  5. Step 5: Solve for x
    x = 25,254,044,962.16/173,478.74
  6. Step 6: Final answer
    x = 145,574.29

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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.