Home / 103,186.55-142,337.10-64,885.48

Finding the Fourth Proportional to 103,186.55, 142,337.10 and 64,885.48

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Solution

The fourth proportional to 103,186.55, 142,337.10 and 64,885.48 is: 89,504.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,186.55 : 142,337.10 = 64,885.48 : x
  2. Step 2: Convert to fraction form
    103,186.55/142,337.10 = 64,885.48/x
  3. Step 3: Cross multiply
    103,186.55x = 142,337.10 × 64,885.48
  4. Step 4: Simplify right side
    103,186.55x = 9,235,610,343.62
  5. Step 5: Solve for x
    x = 9,235,610,343.62/103,186.55
  6. Step 6: Final answer
    x = 89,504.02

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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.