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Finding the Fourth Proportional to 108,875.68, 150,243.60 and 61,128.16

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Solution

The fourth proportional to 108,875.68, 150,243.60 and 61,128.16 is: 84,354.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,875.68 : 150,243.60 = 61,128.16 : x
  2. Step 2: Convert to fraction form
    108,875.68/150,243.60 = 61,128.16/x
  3. Step 3: Cross multiply
    108,875.68x = 150,243.60 × 61,128.16
  4. Step 4: Simplify right side
    108,875.68x = 9,184,114,819.78
  5. Step 5: Solve for x
    x = 9,184,114,819.78/108,875.68
  6. Step 6: Final answer
    x = 84,354.14

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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.