Home / 130,142.74-179,595.72-72,781.43

Finding the Fourth Proportional to 130,142.74, 179,595.72 and 72,781.43

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Solution

The fourth proportional to 130,142.74, 179,595.72 and 72,781.43 is: 100,437.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,142.74 : 179,595.72 = 72,781.43 : x
  2. Step 2: Convert to fraction form
    130,142.74/179,595.72 = 72,781.43/x
  3. Step 3: Cross multiply
    130,142.74x = 179,595.72 × 72,781.43
  4. Step 4: Simplify right side
    130,142.74x = 13,071,233,323.48
  5. Step 5: Solve for x
    x = 13,071,233,323.48/130,142.74
  6. Step 6: Final answer
    x = 100,437.67

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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.