Home / 129,729.12-179,026.08-70,113.12

Finding the Fourth Proportional to 129,729.12, 179,026.08 and 70,113.12

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Solution

The fourth proportional to 129,729.12, 179,026.08 and 70,113.12 is: 96,756.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,729.12 : 179,026.08 = 70,113.12 : x
  2. Step 2: Convert to fraction form
    129,729.12/179,026.08 = 70,113.12/x
  3. Step 3: Cross multiply
    129,729.12x = 179,026.08 × 70,113.12
  4. Step 4: Simplify right side
    129,729.12x = 12,552,077,030.17
  5. Step 5: Solve for x
    x = 12,552,077,030.17/129,729.12
  6. Step 6: Final answer
    x = 96,756.05

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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.