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Finding the Fourth Proportional to 153,007.02, 211,156.02 and 85,023.72

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Solution

The fourth proportional to 153,007.02, 211,156.02 and 85,023.72 is: 117,336.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,007.02 : 211,156.02 = 85,023.72 : x
  2. Step 2: Convert to fraction form
    153,007.02/211,156.02 = 85,023.72/x
  3. Step 3: Cross multiply
    153,007.02x = 211,156.02 × 85,023.72
  4. Step 4: Simplify right side
    153,007.02x = 17,953,270,320.79
  5. Step 5: Solve for x
    x = 17,953,270,320.79/153,007.02
  6. Step 6: Final answer
    x = 117,336.25

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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.