Home / 121,421.68-167,555.83-66,983.40

Finding the Fourth Proportional to 121,421.68, 167,555.83 and 66,983.40

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Solution

The fourth proportional to 121,421.68, 167,555.83 and 66,983.40 is: 92,433.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,421.68 : 167,555.83 = 66,983.40 : x
  2. Step 2: Convert to fraction form
    121,421.68/167,555.83 = 66,983.40/x
  3. Step 3: Cross multiply
    121,421.68x = 167,555.83 × 66,983.40
  4. Step 4: Simplify right side
    121,421.68x = 11,223,459,602.11
  5. Step 5: Solve for x
    x = 11,223,459,602.11/121,421.68
  6. Step 6: Final answer
    x = 92,433.74

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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.