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Finding the Fourth Proportional to 103,615.79, 142,837.57 and 73,307.62

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Solution

The fourth proportional to 103,615.79, 142,837.57 and 73,307.62 is: 101,056.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,615.79 : 142,837.57 = 73,307.62 : x
  2. Step 2: Convert to fraction form
    103,615.79/142,837.57 = 73,307.62/x
  3. Step 3: Cross multiply
    103,615.79x = 142,837.57 × 73,307.62
  4. Step 4: Simplify right side
    103,615.79x = 10,471,082,303.28
  5. Step 5: Solve for x
    x = 10,471,082,303.28/103,615.79
  6. Step 6: Final answer
    x = 101,056.82

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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.