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Finding the Fourth Proportional to 108,477.60, 145,978.20 and 108,477.60

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Solution

The fourth proportional to 108,477.60, 145,978.20 and 108,477.60 is: 145,978.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,477.60 : 145,978.20 = 108,477.60 : x
  2. Step 2: Convert to fraction form
    108,477.60/145,978.20 = 108,477.60/x
  3. Step 3: Cross multiply
    108,477.60x = 145,978.20 × 108,477.60
  4. Step 4: Simplify right side
    108,477.60x = 15,835,364,788.32
  5. Step 5: Solve for x
    x = 15,835,364,788.32/108,477.60
  6. Step 6: Final answer
    x = 145,978.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.