Home / 108,748.40-163,122.60-100,875.20

Finding the Fourth Proportional to 108,748.40, 163,122.60 and 100,875.20

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Solution

The fourth proportional to 108,748.40, 163,122.60 and 100,875.20 is: 151,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,748.40 : 163,122.60 = 100,875.20 : x
  2. Step 2: Convert to fraction form
    108,748.40/163,122.60 = 100,875.20/x
  3. Step 3: Cross multiply
    108,748.40x = 163,122.60 × 100,875.20
  4. Step 4: Simplify right side
    108,748.40x = 16,455,024,899.52
  5. Step 5: Solve for x
    x = 16,455,024,899.52/108,748.40
  6. Step 6: Final answer
    x = 151,312.80

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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.