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Finding the Fourth Proportional to 166,421.70, 249,632.55 and 127,055.70

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Solution

The fourth proportional to 166,421.70, 249,632.55 and 127,055.70 is: 190,583.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,421.70 : 249,632.55 = 127,055.70 : x
  2. Step 2: Convert to fraction form
    166,421.70/249,632.55 = 127,055.70/x
  3. Step 3: Cross multiply
    166,421.70x = 249,632.55 × 127,055.70
  4. Step 4: Simplify right side
    166,421.70x = 31,717,238,383.04
  5. Step 5: Solve for x
    x = 31,717,238,383.04/166,421.70
  6. Step 6: Final answer
    x = 190,583.55

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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.