Home / 90,731.02-136,107.47-38,133.67

Finding the Fourth Proportional to 90,731.02, 136,107.47 and 38,133.67

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Solution

The fourth proportional to 90,731.02, 136,107.47 and 38,133.67 is: 57,205.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,731.02 : 136,107.47 = 38,133.67 : x
  2. Step 2: Convert to fraction form
    90,731.02/136,107.47 = 38,133.67/x
  3. Step 3: Cross multiply
    90,731.02x = 136,107.47 × 38,133.67
  4. Step 4: Simplify right side
    90,731.02x = 5,190,277,345.51
  5. Step 5: Solve for x
    x = 5,190,277,345.51/90,731.02
  6. Step 6: Final answer
    x = 57,205.10

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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.