Home / 129,938.68-179,315.40-70,322.68

Finding the Fourth Proportional to 129,938.68, 179,315.40 and 70,322.68

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Solution

The fourth proportional to 129,938.68, 179,315.40 and 70,322.68 is: 97,045.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,938.68 : 179,315.40 = 70,322.68 : x
  2. Step 2: Convert to fraction form
    129,938.68/179,315.40 = 70,322.68/x
  3. Step 3: Cross multiply
    129,938.68x = 179,315.40 × 70,322.68
  4. Step 4: Simplify right side
    129,938.68x = 12,609,939,493.27
  5. Step 5: Solve for x
    x = 12,609,939,493.27/129,938.68
  6. Step 6: Final answer
    x = 97,045.31

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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.