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Finding the Fourth Proportional to 142,712.76, 214,060.90 and 42,870.76

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Solution

The fourth proportional to 142,712.76, 214,060.90 and 42,870.76 is: 64,303.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,712.76 : 214,060.90 = 42,870.76 : x
  2. Step 2: Convert to fraction form
    142,712.76/214,060.90 = 42,870.76/x
  3. Step 3: Cross multiply
    142,712.76x = 214,060.90 × 42,870.76
  4. Step 4: Simplify right side
    142,712.76x = 9,176,953,469.28
  5. Step 5: Solve for x
    x = 9,176,953,469.28/142,712.76
  6. Step 6: Final answer
    x = 64,303.66

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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.