Home / 209,423.80-289,011.33-118,783.45

Finding the Fourth Proportional to 209,423.80, 289,011.33 and 118,783.45

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Solution

The fourth proportional to 209,423.80, 289,011.33 and 118,783.45 is: 163,924.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,423.80 : 289,011.33 = 118,783.45 : x
  2. Step 2: Convert to fraction form
    209,423.80/289,011.33 = 118,783.45/x
  3. Step 3: Cross multiply
    209,423.80x = 289,011.33 × 118,783.45
  4. Step 4: Simplify right side
    209,423.80x = 34,329,762,866.49
  5. Step 5: Solve for x
    x = 34,329,762,866.49/209,423.80
  6. Step 6: Final answer
    x = 163,924.84

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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.