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Finding the Fourth Proportional to 173,898.60, 260,783.10 and 121,151.40

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Solution

The fourth proportional to 173,898.60, 260,783.10 and 121,151.40 is: 181,681.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,898.60 : 260,783.10 = 121,151.40 : x
  2. Step 2: Convert to fraction form
    173,898.60/260,783.10 = 121,151.40/x
  3. Step 3: Cross multiply
    173,898.60x = 260,783.10 × 121,151.40
  4. Step 4: Simplify right side
    173,898.60x = 31,594,237,661.34
  5. Step 5: Solve for x
    x = 31,594,237,661.34/173,898.60
  6. Step 6: Final answer
    x = 181,681.96

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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.