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Finding the Fourth Proportional to 142,762.40, 214,143.60 and 64,030.40

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Solution

The fourth proportional to 142,762.40, 214,143.60 and 64,030.40 is: 96,045.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,762.40 : 214,143.60 = 64,030.40 : x
  2. Step 2: Convert to fraction form
    142,762.40/214,143.60 = 64,030.40/x
  3. Step 3: Cross multiply
    142,762.40x = 214,143.60 × 64,030.40
  4. Step 4: Simplify right side
    142,762.40x = 13,711,700,365.44
  5. Step 5: Solve for x
    x = 13,711,700,365.44/142,762.40
  6. Step 6: Final answer
    x = 96,045.60

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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.