Home / 130,871.71-180,574.95-76,399.16

Finding the Fourth Proportional to 130,871.71, 180,574.95 and 76,399.16

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Solution

The fourth proportional to 130,871.71, 180,574.95 and 76,399.16 is: 105,414.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,871.71 : 180,574.95 = 76,399.16 : x
  2. Step 2: Convert to fraction form
    130,871.71/180,574.95 = 76,399.16/x
  3. Step 3: Cross multiply
    130,871.71x = 180,574.95 × 76,399.16
  4. Step 4: Simplify right side
    130,871.71x = 13,795,774,244.34
  5. Step 5: Solve for x
    x = 13,795,774,244.34/130,871.71
  6. Step 6: Final answer
    x = 105,414.48

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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.