Home / 124,728.81-172,133.69-71,018.52

Finding the Fourth Proportional to 124,728.81, 172,133.69 and 71,018.52

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Solution

The fourth proportional to 124,728.81, 172,133.69 and 71,018.52 is: 98,010.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,728.81 : 172,133.69 = 71,018.52 : x
  2. Step 2: Convert to fraction form
    124,728.81/172,133.69 = 71,018.52/x
  3. Step 3: Cross multiply
    124,728.81x = 172,133.69 × 71,018.52
  4. Step 4: Simplify right side
    124,728.81x = 12,224,679,905.94
  5. Step 5: Solve for x
    x = 12,224,679,905.94/124,728.81
  6. Step 6: Final answer
    x = 98,010.07

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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.