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Finding the Fourth Proportional to 119,085.06, 178,631.70 and 39,124.70

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Solution

The fourth proportional to 119,085.06, 178,631.70 and 39,124.70 is: 58,688.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,085.06 : 178,631.70 = 39,124.70 : x
  2. Step 2: Convert to fraction form
    119,085.06/178,631.70 = 39,124.70/x
  3. Step 3: Cross multiply
    119,085.06x = 178,631.70 × 39,124.70
  4. Step 4: Simplify right side
    119,085.06x = 6,988,911,672.99
  5. Step 5: Solve for x
    x = 6,988,911,672.99/119,085.06
  6. Step 6: Final answer
    x = 58,688.40

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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.