Home / 108,701.22-149,938.65-78,530.88

Finding the Fourth Proportional to 108,701.22, 149,938.65 and 78,530.88

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Solution

The fourth proportional to 108,701.22, 149,938.65 and 78,530.88 is: 108,322.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,701.22 : 149,938.65 = 78,530.88 : x
  2. Step 2: Convert to fraction form
    108,701.22/149,938.65 = 78,530.88/x
  3. Step 3: Cross multiply
    108,701.22x = 149,938.65 × 78,530.88
  4. Step 4: Simplify right side
    108,701.22x = 11,774,814,130.51
  5. Step 5: Solve for x
    x = 11,774,814,130.51/108,701.22
  6. Step 6: Final answer
    x = 108,322.74

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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.