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Finding the Fourth Proportional to 142,158.60, 213,554.70 and 118,830.60

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Solution

The fourth proportional to 142,158.60, 213,554.70 and 118,830.60 is: 178,510.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,158.60 : 213,554.70 = 118,830.60 : x
  2. Step 2: Convert to fraction form
    142,158.60/213,554.70 = 118,830.60/x
  3. Step 3: Cross multiply
    142,158.60x = 213,554.70 × 118,830.60
  4. Step 4: Simplify right side
    142,158.60x = 25,376,833,133.82
  5. Step 5: Solve for x
    x = 25,376,833,133.82/142,158.60
  6. Step 6: Final answer
    x = 178,510.71

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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.