Home / 142,742.10-214,113.15-42,917.70

Finding the Fourth Proportional to 142,742.10, 214,113.15 and 42,917.70

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Solution

The fourth proportional to 142,742.10, 214,113.15 and 42,917.70 is: 64,376.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,742.10 : 214,113.15 = 42,917.70 : x
  2. Step 2: Convert to fraction form
    142,742.10/214,113.15 = 42,917.70/x
  3. Step 3: Cross multiply
    142,742.10x = 214,113.15 × 42,917.70
  4. Step 4: Simplify right side
    142,742.10x = 9,189,243,937.76
  5. Step 5: Solve for x
    x = 9,189,243,937.76/142,742.10
  6. Step 6: Final answer
    x = 64,376.55

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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.