Home / 180,578.71-249,178.11-99,985.96

Finding the Fourth Proportional to 180,578.71, 249,178.11 and 99,985.96

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Solution

The fourth proportional to 180,578.71, 249,178.11 and 99,985.96 is: 137,969.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,578.71 : 249,178.11 = 99,985.96 : x
  2. Step 2: Convert to fraction form
    180,578.71/249,178.11 = 99,985.96/x
  3. Step 3: Cross multiply
    180,578.71x = 249,178.11 × 99,985.96
  4. Step 4: Simplify right side
    180,578.71x = 24,914,312,539.34
  5. Step 5: Solve for x
    x = 24,914,312,539.34/180,578.71
  6. Step 6: Final answer
    x = 137,969.27

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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.