Home / 99,645.74-148,808.09-87,573.50

Finding the Fourth Proportional to 99,645.74, 148,808.09 and 87,573.50

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Solution

The fourth proportional to 99,645.74, 148,808.09 and 87,573.50 is: 130,779.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,645.74 : 148,808.09 = 87,573.50 : x
  2. Step 2: Convert to fraction form
    99,645.74/148,808.09 = 87,573.50/x
  3. Step 3: Cross multiply
    99,645.74x = 148,808.09 × 87,573.50
  4. Step 4: Simplify right side
    99,645.74x = 13,031,645,269.62
  5. Step 5: Solve for x
    x = 13,031,645,269.62/99,645.74
  6. Step 6: Final answer
    x = 130,779.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.