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Finding the Fourth Proportional to 153,937.82, 212,374.23 and 103,670.30

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Solution

The fourth proportional to 153,937.82, 212,374.23 and 103,670.30 is: 143,024.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,937.82 : 212,374.23 = 103,670.30 : x
  2. Step 2: Convert to fraction form
    153,937.82/212,374.23 = 103,670.30/x
  3. Step 3: Cross multiply
    153,937.82x = 212,374.23 × 103,670.30
  4. Step 4: Simplify right side
    153,937.82x = 22,016,900,136.37
  5. Step 5: Solve for x
    x = 22,016,900,136.37/153,937.82
  6. Step 6: Final answer
    x = 143,024.63

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1.5x scale

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.