Home / 131,491.40-181,457.70-74,912.36

Finding the Fourth Proportional to 131,491.40, 181,457.70 and 74,912.36

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Solution

The fourth proportional to 131,491.40, 181,457.70 and 74,912.36 is: 103,378.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,491.40 : 181,457.70 = 74,912.36 : x
  2. Step 2: Convert to fraction form
    131,491.40/181,457.70 = 74,912.36/x
  3. Step 3: Cross multiply
    131,491.40x = 181,457.70 × 74,912.36
  4. Step 4: Simplify right side
    131,491.40x = 13,593,424,547.17
  5. Step 5: Solve for x
    x = 13,593,424,547.17/131,491.40
  6. Step 6: Final answer
    x = 103,378.81

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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.