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Finding the Fourth Proportional to 173,875.60, 260,748.60 and 121,128.40

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Solution

The fourth proportional to 173,875.60, 260,748.60 and 121,128.40 is: 181,647.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,875.60 : 260,748.60 = 121,128.40 : x
  2. Step 2: Convert to fraction form
    173,875.60/260,748.60 = 121,128.40/x
  3. Step 3: Cross multiply
    173,875.60x = 260,748.60 × 121,128.40
  4. Step 4: Simplify right side
    173,875.60x = 31,584,060,720.24
  5. Step 5: Solve for x
    x = 31,584,060,720.24/173,875.60
  6. Step 6: Final answer
    x = 181,647.46

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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.