Home / 153,005.60-211,139.76-85,026.56

Finding the Fourth Proportional to 153,005.60, 211,139.76 and 85,026.56

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Solution

The fourth proportional to 153,005.60, 211,139.76 and 85,026.56 is: 117,332.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,005.60 : 211,139.76 = 85,026.56 : x
  2. Step 2: Convert to fraction form
    153,005.60/211,139.76 = 85,026.56/x
  3. Step 3: Cross multiply
    153,005.60x = 211,139.76 × 85,026.56
  4. Step 4: Simplify right side
    153,005.60x = 17,952,487,472.03
  5. Step 5: Solve for x
    x = 17,952,487,472.03/153,005.60
  6. Step 6: Final answer
    x = 117,332.22

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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.