Home / 91,341.12-137,039.44-64,738.56

Finding the Fourth Proportional to 91,341.12, 137,039.44 and 64,738.56

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Solution

The fourth proportional to 91,341.12, 137,039.44 and 64,738.56 is: 97,127.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,341.12 : 137,039.44 = 64,738.56 : x
  2. Step 2: Convert to fraction form
    91,341.12/137,039.44 = 64,738.56/x
  3. Step 3: Cross multiply
    91,341.12x = 137,039.44 × 64,738.56
  4. Step 4: Simplify right side
    91,341.12x = 8,871,736,008.81
  5. Step 5: Solve for x
    x = 8,871,736,008.81/91,341.12
  6. Step 6: Final answer
    x = 97,127.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.