Home / 99,421.28-137,156.03-59,112.14

Finding the Fourth Proportional to 99,421.28, 137,156.03 and 59,112.14

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Solution

The fourth proportional to 99,421.28, 137,156.03 and 59,112.14 is: 81,547.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,421.28 : 137,156.03 = 59,112.14 : x
  2. Step 2: Convert to fraction form
    99,421.28/137,156.03 = 59,112.14/x
  3. Step 3: Cross multiply
    99,421.28x = 137,156.03 × 59,112.14
  4. Step 4: Simplify right side
    99,421.28x = 8,107,585,465.86
  5. Step 5: Solve for x
    x = 8,107,585,465.86/99,421.28
  6. Step 6: Final answer
    x = 81,547.79

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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.