Home / 130,341.11-179,855.86-72,972.45

Finding the Fourth Proportional to 130,341.11, 179,855.86 and 72,972.45

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Solution

The fourth proportional to 130,341.11, 179,855.86 and 72,972.45 is: 100,693.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,341.11 : 179,855.86 = 72,972.45 : x
  2. Step 2: Convert to fraction form
    130,341.11/179,855.86 = 72,972.45/x
  3. Step 3: Cross multiply
    130,341.11x = 179,855.86 × 72,972.45
  4. Step 4: Simplify right side
    130,341.11x = 13,124,522,568.63
  5. Step 5: Solve for x
    x = 13,124,522,568.63/130,341.11
  6. Step 6: Final answer
    x = 100,693.66

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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.