Home / 121,156.23-167,247.29-86,253.38

Finding the Fourth Proportional to 121,156.23, 167,247.29 and 86,253.38

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Solution

The fourth proportional to 121,156.23, 167,247.29 and 86,253.38 is: 119,066.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,156.23 : 167,247.29 = 86,253.38 : x
  2. Step 2: Convert to fraction form
    121,156.23/167,247.29 = 86,253.38/x
  3. Step 3: Cross multiply
    121,156.23x = 167,247.29 × 86,253.38
  4. Step 4: Simplify right side
    121,156.23x = 14,425,644,064.91
  5. Step 5: Solve for x
    x = 14,425,644,064.91/121,156.23
  6. Step 6: Final answer
    x = 119,066.46

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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.