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Finding the Fourth Proportional to 186,646.79, 279,792.81 and 118,988.90

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Solution

The fourth proportional to 186,646.79, 279,792.81 and 118,988.90 is: 178,370.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,646.79 : 279,792.81 = 118,988.90 : x
  2. Step 2: Convert to fraction form
    186,646.79/279,792.81 = 118,988.90/x
  3. Step 3: Cross multiply
    186,646.79x = 279,792.81 × 118,988.90
  4. Step 4: Simplify right side
    186,646.79x = 33,292,238,689.81
  5. Step 5: Solve for x
    x = 33,292,238,689.81/186,646.79
  6. Step 6: Final answer
    x = 178,370.27

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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.