Home / 112,631.19-155,368.63-72,299.67

Finding the Fourth Proportional to 112,631.19, 155,368.63 and 72,299.67

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Solution

The fourth proportional to 112,631.19, 155,368.63 and 72,299.67 is: 99,733.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,631.19 : 155,368.63 = 72,299.67 : x
  2. Step 2: Convert to fraction form
    112,631.19/155,368.63 = 72,299.67/x
  3. Step 3: Cross multiply
    112,631.19x = 155,368.63 × 72,299.67
  4. Step 4: Simplify right side
    112,631.19x = 11,233,100,677.35
  5. Step 5: Solve for x
    x = 11,233,100,677.35/112,631.19
  6. Step 6: Final answer
    x = 99,733.48

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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.