Home / 98,493.08-135,920.34-58,221.40

Finding the Fourth Proportional to 98,493.08, 135,920.34 and 58,221.40

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Solution

The fourth proportional to 98,493.08, 135,920.34 and 58,221.40 is: 80,345.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,493.08 : 135,920.34 = 58,221.40 : x
  2. Step 2: Convert to fraction form
    98,493.08/135,920.34 = 58,221.40/x
  3. Step 3: Cross multiply
    98,493.08x = 135,920.34 × 58,221.40
  4. Step 4: Simplify right side
    98,493.08x = 7,913,472,483.28
  5. Step 5: Solve for x
    x = 7,913,472,483.28/98,493.08
  6. Step 6: Final answer
    x = 80,345.47

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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.