Home / 124,728.81-172,123.08-71,013.06

Finding the Fourth Proportional to 124,728.81, 172,123.08 and 71,013.06

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Solution

The fourth proportional to 124,728.81, 172,123.08 and 71,013.06 is: 97,996.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,728.81 : 172,123.08 = 71,013.06 : x
  2. Step 2: Convert to fraction form
    124,728.81/172,123.08 = 71,013.06/x
  3. Step 3: Cross multiply
    124,728.81x = 172,123.08 × 71,013.06
  4. Step 4: Simplify right side
    124,728.81x = 12,222,986,607.42
  5. Step 5: Solve for x
    x = 12,222,986,607.42/124,728.81
  6. Step 6: Final answer
    x = 97,996.50

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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.