Home / 136,870.09-205,305.62-42,099.63

Finding the Fourth Proportional to 136,870.09, 205,305.62 and 42,099.63

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Solution

The fourth proportional to 136,870.09, 205,305.62 and 42,099.63 is: 63,149.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,870.09 : 205,305.62 = 42,099.63 : x
  2. Step 2: Convert to fraction form
    136,870.09/205,305.62 = 42,099.63/x
  3. Step 3: Cross multiply
    136,870.09x = 205,305.62 × 42,099.63
  4. Step 4: Simplify right side
    136,870.09x = 8,643,290,931.78
  5. Step 5: Solve for x
    x = 8,643,290,931.78/136,870.09
  6. Step 6: Final answer
    x = 63,149.60

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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.