Home / 130,288.16-179,772.09-81,862.02

Finding the Fourth Proportional to 130,288.16, 179,772.09 and 81,862.02

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Solution

The fourth proportional to 130,288.16, 179,772.09 and 81,862.02 is: 112,953.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,288.16 : 179,772.09 = 81,862.02 : x
  2. Step 2: Convert to fraction form
    130,288.16/179,772.09 = 81,862.02/x
  3. Step 3: Cross multiply
    130,288.16x = 179,772.09 × 81,862.02
  4. Step 4: Simplify right side
    130,288.16x = 14,716,506,427.02
  5. Step 5: Solve for x
    x = 14,716,506,427.02/130,288.16
  6. Step 6: Final answer
    x = 112,953.53

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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.