Home / 99,445.60-137,200.28-56,420.02

Finding the Fourth Proportional to 99,445.60, 137,200.28 and 56,420.02

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Solution

The fourth proportional to 99,445.60, 137,200.28 and 56,420.02 is: 77,839.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,445.60 : 137,200.28 = 56,420.02 : x
  2. Step 2: Convert to fraction form
    99,445.60/137,200.28 = 56,420.02/x
  3. Step 3: Cross multiply
    99,445.60x = 137,200.28 × 56,420.02
  4. Step 4: Simplify right side
    99,445.60x = 7,740,842,339.65
  5. Step 5: Solve for x
    x = 7,740,842,339.65/99,445.60
  6. Step 6: Final answer
    x = 77,839.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.