Home / 131,607.70-181,618.08-71,178.40

Finding the Fourth Proportional to 131,607.70, 181,618.08 and 71,178.40

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Solution

The fourth proportional to 131,607.70, 181,618.08 and 71,178.40 is: 98,225.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,607.70 : 181,618.08 = 71,178.40 : x
  2. Step 2: Convert to fraction form
    131,607.70/181,618.08 = 71,178.40/x
  3. Step 3: Cross multiply
    131,607.70x = 181,618.08 × 71,178.40
  4. Step 4: Simplify right side
    131,607.70x = 12,927,284,345.47
  5. Step 5: Solve for x
    x = 12,927,284,345.47/131,607.70
  6. Step 6: Final answer
    x = 98,225.90

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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.