Home / 112,406.96-155,117.00-61,421.45

Finding the Fourth Proportional to 112,406.96, 155,117.00 and 61,421.45

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Solution

The fourth proportional to 112,406.96, 155,117.00 and 61,421.45 is: 84,759.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,406.96 : 155,117.00 = 61,421.45 : x
  2. Step 2: Convert to fraction form
    112,406.96/155,117.00 = 61,421.45/x
  3. Step 3: Cross multiply
    112,406.96x = 155,117.00 × 61,421.45
  4. Step 4: Simplify right side
    112,406.96x = 9,527,510,437.62
  5. Step 5: Solve for x
    x = 9,527,510,437.62/112,406.96
  6. Step 6: Final answer
    x = 84,759.08

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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.