Home / 142,045.73-196,034.17-81,637.45

Finding the Fourth Proportional to 142,045.73, 196,034.17 and 81,637.45

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Solution

The fourth proportional to 142,045.73, 196,034.17 and 81,637.45 is: 112,666.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,045.73 : 196,034.17 = 81,637.45 : x
  2. Step 2: Convert to fraction form
    142,045.73/196,034.17 = 81,637.45/x
  3. Step 3: Cross multiply
    142,045.73x = 196,034.17 × 81,637.45
  4. Step 4: Simplify right side
    142,045.73x = 16,003,728,567.40
  5. Step 5: Solve for x
    x = 16,003,728,567.40/142,045.73
  6. Step 6: Final answer
    x = 112,666.03

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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.