Home / 129,098.03-178,139.72-71,737.07

Finding the Fourth Proportional to 129,098.03, 178,139.72 and 71,737.07

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Solution

The fourth proportional to 129,098.03, 178,139.72 and 71,737.07 is: 98,988.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,098.03 : 178,139.72 = 71,737.07 : x
  2. Step 2: Convert to fraction form
    129,098.03/178,139.72 = 71,737.07/x
  3. Step 3: Cross multiply
    129,098.03x = 178,139.72 × 71,737.07
  4. Step 4: Simplify right side
    129,098.03x = 12,779,220,852.06
  5. Step 5: Solve for x
    x = 12,779,220,852.06/129,098.03
  6. Step 6: Final answer
    x = 98,988.51

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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.