Home / 131,671.08-181,722.78-86,387.34

Finding the Fourth Proportional to 131,671.08, 181,722.78 and 86,387.34

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Solution

The fourth proportional to 131,671.08, 181,722.78 and 86,387.34 is: 119,225.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,671.08 : 181,722.78 = 86,387.34 : x
  2. Step 2: Convert to fraction form
    131,671.08/181,722.78 = 86,387.34/x
  3. Step 3: Cross multiply
    131,671.08x = 181,722.78 × 86,387.34
  4. Step 4: Simplify right side
    131,671.08x = 15,698,547,581.61
  5. Step 5: Solve for x
    x = 15,698,547,581.61/131,671.08
  6. Step 6: Final answer
    x = 119,225.48

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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.