Home / 102,030.60-153,118.80-42,908.70

Finding the Fourth Proportional to 102,030.60, 153,118.80 and 42,908.70

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Solution

The fourth proportional to 102,030.60, 153,118.80 and 42,908.70 is: 64,393.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,030.60 : 153,118.80 = 42,908.70 : x
  2. Step 2: Convert to fraction form
    102,030.60/153,118.80 = 42,908.70/x
  3. Step 3: Cross multiply
    102,030.60x = 153,118.80 × 42,908.70
  4. Step 4: Simplify right side
    102,030.60x = 6,570,128,653.56
  5. Step 5: Solve for x
    x = 6,570,128,653.56/102,030.60
  6. Step 6: Final answer
    x = 64,393.71

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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.