Home / 99,347.04-137,084.40-56,898.72

Finding the Fourth Proportional to 99,347.04, 137,084.40 and 56,898.72

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Solution

The fourth proportional to 99,347.04, 137,084.40 and 56,898.72 is: 78,511.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,347.04 : 137,084.40 = 56,898.72 : x
  2. Step 2: Convert to fraction form
    99,347.04/137,084.40 = 56,898.72/x
  3. Step 3: Cross multiply
    99,347.04x = 137,084.40 × 56,898.72
  4. Step 4: Simplify right side
    99,347.04x = 7,799,926,891.97
  5. Step 5: Solve for x
    x = 7,799,926,891.97/99,347.04
  6. Step 6: Final answer
    x = 78,511.92

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1.5x scale

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.