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Finding the Fourth Proportional to 142,749.80, 214,124.70 and 59,643.80

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Solution

The fourth proportional to 142,749.80, 214,124.70 and 59,643.80 is: 89,465.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,749.80 : 214,124.70 = 59,643.80 : x
  2. Step 2: Convert to fraction form
    142,749.80/214,124.70 = 59,643.80/x
  3. Step 3: Cross multiply
    142,749.80x = 214,124.70 × 59,643.80
  4. Step 4: Simplify right side
    142,749.80x = 12,771,210,781.86
  5. Step 5: Solve for x
    x = 12,771,210,781.86/142,749.80
  6. Step 6: Final answer
    x = 89,465.70

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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.