Home / 166,421.40-249,632.10-140,080.20

Finding the Fourth Proportional to 166,421.40, 249,632.10 and 140,080.20

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Solution

The fourth proportional to 166,421.40, 249,632.10 and 140,080.20 is: 210,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,421.40 : 249,632.10 = 140,080.20 : x
  2. Step 2: Convert to fraction form
    166,421.40/249,632.10 = 140,080.20/x
  3. Step 3: Cross multiply
    166,421.40x = 249,632.10 × 140,080.20
  4. Step 4: Simplify right side
    166,421.40x = 34,968,514,494.42
  5. Step 5: Solve for x
    x = 34,968,514,494.42/166,421.40
  6. Step 6: Final answer
    x = 210,120.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.