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Finding the Fourth Proportional to 153,060.56, 211,214.28 and 85,075.28

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Solution

The fourth proportional to 153,060.56, 211,214.28 and 85,075.28 is: 117,398.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,060.56 : 211,214.28 = 85,075.28 : x
  2. Step 2: Convert to fraction form
    153,060.56/211,214.28 = 85,075.28/x
  3. Step 3: Cross multiply
    153,060.56x = 211,214.28 × 85,075.28
  4. Step 4: Simplify right side
    153,060.56x = 17,969,114,011.00
  5. Step 5: Solve for x
    x = 17,969,114,011.00/153,060.56
  6. Step 6: Final answer
    x = 117,398.72

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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.