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Finding the Fourth Proportional to 173,688.40, 260,359.80 and 80,030.80

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Solution

The fourth proportional to 173,688.40, 260,359.80 and 80,030.80 is: 119,966.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,688.40 : 260,359.80 = 80,030.80 : x
  2. Step 2: Convert to fraction form
    173,688.40/260,359.80 = 80,030.80/x
  3. Step 3: Cross multiply
    173,688.40x = 260,359.80 × 80,030.80
  4. Step 4: Simplify right side
    173,688.40x = 20,836,803,081.84
  5. Step 5: Solve for x
    x = 20,836,803,081.84/173,688.40
  6. Step 6: Final answer
    x = 119,966.58

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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.