Home / 98,545.08-136,016.52-56,128.68

Finding the Fourth Proportional to 98,545.08, 136,016.52 and 56,128.68

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Solution

The fourth proportional to 98,545.08, 136,016.52 and 56,128.68 is: 77,471.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,545.08 : 136,016.52 = 56,128.68 : x
  2. Step 2: Convert to fraction form
    98,545.08/136,016.52 = 56,128.68/x
  3. Step 3: Cross multiply
    98,545.08x = 136,016.52 × 56,128.68
  4. Step 4: Simplify right side
    98,545.08x = 7,634,427,725.79
  5. Step 5: Solve for x
    x = 7,634,427,725.79/98,545.08
  6. Step 6: Final answer
    x = 77,471.42

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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.