Home / 98,996.61-148,140.18-85,715.42

Finding the Fourth Proportional to 98,996.61, 148,140.18 and 85,715.42

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Solution

The fourth proportional to 98,996.61, 148,140.18 and 85,715.42 is: 128,265.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,996.61 : 148,140.18 = 85,715.42 : x
  2. Step 2: Convert to fraction form
    98,996.61/148,140.18 = 85,715.42/x
  3. Step 3: Cross multiply
    98,996.61x = 148,140.18 × 85,715.42
  4. Step 4: Simplify right side
    98,996.61x = 12,697,897,319.00
  5. Step 5: Solve for x
    x = 12,697,897,319.00/98,996.61
  6. Step 6: Final answer
    x = 128,265.98

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.