Home / 142,772.10-214,158.15-42,947.70

Finding the Fourth Proportional to 142,772.10, 214,158.15 and 42,947.70

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Solution

The fourth proportional to 142,772.10, 214,158.15 and 42,947.70 is: 64,421.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,772.10 : 214,158.15 = 42,947.70 : x
  2. Step 2: Convert to fraction form
    142,772.10/214,158.15 = 42,947.70/x
  3. Step 3: Cross multiply
    142,772.10x = 214,158.15 × 42,947.70
  4. Step 4: Simplify right side
    142,772.10x = 9,197,599,978.76
  5. Step 5: Solve for x
    x = 9,197,599,978.76/142,772.10
  6. Step 6: Final answer
    x = 64,421.55

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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.