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Finding the Fourth Proportional to 108,646.04, 149,931.36 and 66,204.68

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Solution

The fourth proportional to 108,646.04, 149,931.36 and 66,204.68 is: 91,362.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,646.04 : 149,931.36 = 66,204.68 : x
  2. Step 2: Convert to fraction form
    108,646.04/149,931.36 = 66,204.68/x
  3. Step 3: Cross multiply
    108,646.04x = 149,931.36 × 66,204.68
  4. Step 4: Simplify right side
    108,646.04x = 9,926,157,710.76
  5. Step 5: Solve for x
    x = 9,926,157,710.76/108,646.04
  6. Step 6: Final answer
    x = 91,362.35

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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.