Home / 130,070.71-179,444.46-103,105

Finding the Fourth Proportional to 130,070.71, 179,444.46 and 103,105

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Solution

The fourth proportional to 130,070.71, 179,444.46 and 103,105 is: 142,242.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,070.71 : 179,444.46 = 103,105 : x
  2. Step 2: Convert to fraction form
    130,070.71/179,444.46 = 103,105/x
  3. Step 3: Cross multiply
    130,070.71x = 179,444.46 × 103,105
  4. Step 4: Simplify right side
    130,070.71x = 18,501,621,048.30
  5. Step 5: Solve for x
    x = 18,501,621,048.30/130,070.71
  6. Step 6: Final answer
    x = 142,242.79

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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.