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Finding the Fourth Proportional to 173,985.60, 260,978.40 and 118,689.60

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Solution

The fourth proportional to 173,985.60, 260,978.40 and 118,689.60 is: 178,034.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,985.60 : 260,978.40 = 118,689.60 : x
  2. Step 2: Convert to fraction form
    173,985.60/260,978.40 = 118,689.60/x
  3. Step 3: Cross multiply
    173,985.60x = 260,978.40 × 118,689.60
  4. Step 4: Simplify right side
    173,985.60x = 30,975,421,904.64
  5. Step 5: Solve for x
    x = 30,975,421,904.64/173,985.60
  6. Step 6: Final answer
    x = 178,034.40

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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.