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Finding the Fourth Proportional to 98,567.70, 147,851.55 and 85,737.30

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Solution

The fourth proportional to 98,567.70, 147,851.55 and 85,737.30 is: 128,605.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,567.70 : 147,851.55 = 85,737.30 : x
  2. Step 2: Convert to fraction form
    98,567.70/147,851.55 = 85,737.30/x
  3. Step 3: Cross multiply
    98,567.70x = 147,851.55 × 85,737.30
  4. Step 4: Simplify right side
    98,567.70x = 12,676,392,697.82
  5. Step 5: Solve for x
    x = 12,676,392,697.82/98,567.70
  6. Step 6: Final answer
    x = 128,605.95

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1.5x scale

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.