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Finding the Fourth Proportional to 131,424.71, 181,365.92 and 70,995.34

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Solution

The fourth proportional to 131,424.71, 181,365.92 and 70,995.34 is: 97,973.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,424.71 : 181,365.92 = 70,995.34 : x
  2. Step 2: Convert to fraction form
    131,424.71/181,365.92 = 70,995.34/x
  3. Step 3: Cross multiply
    131,424.71x = 181,365.92 × 70,995.34
  4. Step 4: Simplify right side
    131,424.71x = 12,876,135,154.81
  5. Step 5: Solve for x
    x = 12,876,135,154.81/131,424.71
  6. Step 6: Final answer
    x = 97,973.47

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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.