Home / 130,673.68-195,763.80-77,206.12

Finding the Fourth Proportional to 130,673.68, 195,763.80 and 77,206.12

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Solution

The fourth proportional to 130,673.68, 195,763.80 and 77,206.12 is: 115,663.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,673.68 : 195,763.80 = 77,206.12 : x
  2. Step 2: Convert to fraction form
    130,673.68/195,763.80 = 77,206.12/x
  3. Step 3: Cross multiply
    130,673.68x = 195,763.80 × 77,206.12
  4. Step 4: Simplify right side
    130,673.68x = 15,114,163,434.46
  5. Step 5: Solve for x
    x = 15,114,163,434.46/130,673.68
  6. Step 6: Final answer
    x = 115,663.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.