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Finding the Fourth Proportional to 108,376.86, 149,562.36 and 65,356.32

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Solution

The fourth proportional to 108,376.86, 149,562.36 and 65,356.32 is: 90,193.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,376.86 : 149,562.36 = 65,356.32 : x
  2. Step 2: Convert to fraction form
    108,376.86/149,562.36 = 65,356.32/x
  3. Step 3: Cross multiply
    108,376.86x = 149,562.36 × 65,356.32
  4. Step 4: Simplify right side
    108,376.86x = 9,774,845,460.12
  5. Step 5: Solve for x
    x = 9,774,845,460.12/108,376.86
  6. Step 6: Final answer
    x = 90,193.10

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1.5x scale

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.