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Finding the Fourth Proportional to 142,693.60, 214,040.40 and 42,869.20

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Solution

The fourth proportional to 142,693.60, 214,040.40 and 42,869.20 is: 64,303.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,693.60 : 214,040.40 = 42,869.20 : x
  2. Step 2: Convert to fraction form
    142,693.60/214,040.40 = 42,869.20/x
  3. Step 3: Cross multiply
    142,693.60x = 214,040.40 × 42,869.20
  4. Step 4: Simplify right side
    142,693.60x = 9,175,740,715.68
  5. Step 5: Solve for x
    x = 9,175,740,715.68/142,693.60
  6. Step 6: Final answer
    x = 64,303.80

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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.