Home / 180,971.95-249,739.09-100,397.47

Finding the Fourth Proportional to 180,971.95, 249,739.09 and 100,397.47

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Solution

The fourth proportional to 180,971.95, 249,739.09 and 100,397.47 is: 138,547.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    180,971.95 : 249,739.09 = 100,397.47 : x
  2. Step 2: Convert to fraction form
    180,971.95/249,739.09 = 100,397.47/x
  3. Step 3: Cross multiply
    180,971.95x = 249,739.09 × 100,397.47
  4. Step 4: Simplify right side
    180,971.95x = 25,073,172,796.10
  5. Step 5: Solve for x
    x = 25,073,172,796.10/180,971.95
  6. Step 6: Final answer
    x = 138,547.29

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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.