Home / 181,002.34-249,779.40-100,428.13

Finding the Fourth Proportional to 181,002.34, 249,779.40 and 100,428.13

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Solution

The fourth proportional to 181,002.34, 249,779.40 and 100,428.13 is: 138,588.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,002.34 : 249,779.40 = 100,428.13 : x
  2. Step 2: Convert to fraction form
    181,002.34/249,779.40 = 100,428.13/x
  3. Step 3: Cross multiply
    181,002.34x = 249,779.40 × 100,428.13
  4. Step 4: Simplify right side
    181,002.34x = 25,084,876,805.63
  5. Step 5: Solve for x
    x = 25,084,876,805.63/181,002.34
  6. Step 6: Final answer
    x = 138,588.69

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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.