Home / 99,140.18-148,710.35-81,573.08

Finding the Fourth Proportional to 99,140.18, 148,710.35 and 81,573.08

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Solution

The fourth proportional to 99,140.18, 148,710.35 and 81,573.08 is: 122,359.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,140.18 : 148,710.35 = 81,573.08 : x
  2. Step 2: Convert to fraction form
    99,140.18/148,710.35 = 81,573.08/x
  3. Step 3: Cross multiply
    99,140.18x = 148,710.35 × 81,573.08
  4. Step 4: Simplify right side
    99,140.18x = 12,130,761,277.38
  5. Step 5: Solve for x
    x = 12,130,761,277.38/99,140.18
  6. Step 6: Final answer
    x = 122,359.69

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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.