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Finding the Fourth Proportional to 131,362.50, 181,284.58 and 71,746.50

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Solution

The fourth proportional to 131,362.50, 181,284.58 and 71,746.50 is: 99,012.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,362.50 : 181,284.58 = 71,746.50 : x
  2. Step 2: Convert to fraction form
    131,362.50/181,284.58 = 71,746.50/x
  3. Step 3: Cross multiply
    131,362.50x = 181,284.58 × 71,746.50
  4. Step 4: Simplify right side
    131,362.50x = 13,006,534,118.97
  5. Step 5: Solve for x
    x = 13,006,534,118.97/131,362.50
  6. Step 6: Final answer
    x = 99,012.53

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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.