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Finding the Fourth Proportional to 99,567.90, 149,643.45 and 97,818.30

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Solution

The fourth proportional to 99,567.90, 149,643.45 and 97,818.30 is: 147,013.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,567.90 : 149,643.45 = 97,818.30 : x
  2. Step 2: Convert to fraction form
    99,567.90/149,643.45 = 97,818.30/x
  3. Step 3: Cross multiply
    99,567.90x = 149,643.45 × 97,818.30
  4. Step 4: Simplify right side
    99,567.90x = 14,637,867,885.14
  5. Step 5: Solve for x
    x = 14,637,867,885.14/99,567.90
  6. Step 6: Final answer
    x = 147,013.93

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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.