Home / 180,778.79-249,448.54-100,206.29

Finding the Fourth Proportional to 180,778.79, 249,448.54 and 100,206.29

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Solution

The fourth proportional to 180,778.79, 249,448.54 and 100,206.29 is: 138,270.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,778.79 : 249,448.54 = 100,206.29 : x
  2. Step 2: Convert to fraction form
    180,778.79/249,448.54 = 100,206.29/x
  3. Step 3: Cross multiply
    180,778.79x = 249,448.54 × 100,206.29
  4. Step 4: Simplify right side
    180,778.79x = 24,996,312,316.90
  5. Step 5: Solve for x
    x = 24,996,312,316.90/180,778.79
  6. Step 6: Final answer
    x = 138,270.16

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1.5x scale

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.