Home / 130,239.78-179,679.51-81,813.26

Finding the Fourth Proportional to 130,239.78, 179,679.51 and 81,813.26

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Solution

The fourth proportional to 130,239.78, 179,679.51 and 81,813.26 is: 112,870.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,239.78 : 179,679.51 = 81,813.26 : x
  2. Step 2: Convert to fraction form
    130,239.78/179,679.51 = 81,813.26/x
  3. Step 3: Cross multiply
    130,239.78x = 179,679.51 × 81,813.26
  4. Step 4: Simplify right side
    130,239.78x = 14,700,165,569.91
  5. Step 5: Solve for x
    x = 14,700,165,569.91/130,239.78
  6. Step 6: Final answer
    x = 112,870.01

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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.