Home / 100,527.40-138,730.14-57,510.93

Finding the Fourth Proportional to 100,527.40, 138,730.14 and 57,510.93

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Solution

The fourth proportional to 100,527.40, 138,730.14 and 57,510.93 is: 79,366.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,527.40 : 138,730.14 = 57,510.93 : x
  2. Step 2: Convert to fraction form
    100,527.40/138,730.14 = 57,510.93/x
  3. Step 3: Cross multiply
    100,527.40x = 138,730.14 × 57,510.93
  4. Step 4: Simplify right side
    100,527.40x = 7,978,499,890.67
  5. Step 5: Solve for x
    x = 7,978,499,890.67/100,527.40
  6. Step 6: Final answer
    x = 79,366.42

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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.