Home / 153,890.69-212,465.43-118,011.74

Finding the Fourth Proportional to 153,890.69, 212,465.43 and 118,011.74

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Solution

The fourth proportional to 153,890.69, 212,465.43 and 118,011.74 is: 162,930.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,890.69 : 212,465.43 = 118,011.74 : x
  2. Step 2: Convert to fraction form
    153,890.69/212,465.43 = 118,011.74/x
  3. Step 3: Cross multiply
    153,890.69x = 212,465.43 × 118,011.74
  4. Step 4: Simplify right side
    153,890.69x = 25,073,414,021.82
  5. Step 5: Solve for x
    x = 25,073,414,021.82/153,890.69
  6. Step 6: Final answer
    x = 162,930.03

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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.