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Finding the Fourth Proportional to 119,034.80, 178,357.80 and 102,316.40

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Solution

The fourth proportional to 119,034.80, 178,357.80 and 102,316.40 is: 153,307.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,034.80 : 178,357.80 = 102,316.40 : x
  2. Step 2: Convert to fraction form
    119,034.80/178,357.80 = 102,316.40/x
  3. Step 3: Cross multiply
    119,034.80x = 178,357.80 × 102,316.40
  4. Step 4: Simplify right side
    119,034.80x = 18,248,928,007.92
  5. Step 5: Solve for x
    x = 18,248,928,007.92/119,034.80
  6. Step 6: Final answer
    x = 153,307.50

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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.