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Finding the Fourth Proportional to 166,412.92, 249,681.72 and 86,400.96

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Solution

The fourth proportional to 166,412.92, 249,681.72 and 86,400.96 is: 129,633.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,412.92 : 249,681.72 = 86,400.96 : x
  2. Step 2: Convert to fraction form
    166,412.92/249,681.72 = 86,400.96/x
  3. Step 3: Cross multiply
    166,412.92x = 249,681.72 × 86,400.96
  4. Step 4: Simplify right side
    166,412.92x = 21,572,740,302.45
  5. Step 5: Solve for x
    x = 21,572,740,302.45/166,412.92
  6. Step 6: Final answer
    x = 129,633.81

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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.