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Finding the Fourth Proportional to 180,522.90, 249,130.80 and 99,959.31

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Solution

The fourth proportional to 180,522.90, 249,130.80 and 99,959.31 is: 137,948.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,522.90 : 249,130.80 = 99,959.31 : x
  2. Step 2: Convert to fraction form
    180,522.90/249,130.80 = 99,959.31/x
  3. Step 3: Cross multiply
    180,522.90x = 249,130.80 × 99,959.31
  4. Step 4: Simplify right side
    180,522.90x = 24,902,942,867.75
  5. Step 5: Solve for x
    x = 24,902,942,867.75/180,522.90
  6. Step 6: Final answer
    x = 137,948.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.