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Finding the Fourth Proportional to 108,717.10, 163,075.65 and 73,287.70

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Solution

The fourth proportional to 108,717.10, 163,075.65 and 73,287.70 is: 109,931.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,717.10 : 163,075.65 = 73,287.70 : x
  2. Step 2: Convert to fraction form
    108,717.10/163,075.65 = 73,287.70/x
  3. Step 3: Cross multiply
    108,717.10x = 163,075.65 × 73,287.70
  4. Step 4: Simplify right side
    108,717.10x = 11,951,439,314.51
  5. Step 5: Solve for x
    x = 11,951,439,314.51/108,717.10
  6. Step 6: Final answer
    x = 109,931.55

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1.5x scale

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.