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Finding the Fourth Proportional to 153,308.02, 211,445.03 and 99,610.48

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Solution

The fourth proportional to 153,308.02, 211,445.03 and 99,610.48 is: 137,384.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,308.02 : 211,445.03 = 99,610.48 : x
  2. Step 2: Convert to fraction form
    153,308.02/211,445.03 = 99,610.48/x
  3. Step 3: Cross multiply
    153,308.02x = 211,445.03 × 99,610.48
  4. Step 4: Simplify right side
    153,308.02x = 21,062,140,931.91
  5. Step 5: Solve for x
    x = 21,062,140,931.91/153,308.02
  6. Step 6: Final answer
    x = 137,384.47

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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.