Home / 130,070.95-179,526.86-79,072.88

Finding the Fourth Proportional to 130,070.95, 179,526.86 and 79,072.88

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Solution

The fourth proportional to 130,070.95, 179,526.86 and 79,072.88 is: 109,138.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,070.95 : 179,526.86 = 79,072.88 : x
  2. Step 2: Convert to fraction form
    130,070.95/179,526.86 = 79,072.88/x
  3. Step 3: Cross multiply
    130,070.95x = 179,526.86 × 79,072.88
  4. Step 4: Simplify right side
    130,070.95x = 14,195,705,305.87
  5. Step 5: Solve for x
    x = 14,195,705,305.87/130,070.95
  6. Step 6: Final answer
    x = 109,138.17

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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.