Home / 112,938.40-155,883.35-76,701.17

Finding the Fourth Proportional to 112,938.40, 155,883.35 and 76,701.17

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Solution

The fourth proportional to 112,938.40, 155,883.35 and 76,701.17 is: 105,866.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,938.40 : 155,883.35 = 76,701.17 : x
  2. Step 2: Convert to fraction form
    112,938.40/155,883.35 = 76,701.17/x
  3. Step 3: Cross multiply
    112,938.40x = 155,883.35 × 76,701.17
  4. Step 4: Simplify right side
    112,938.40x = 11,956,435,328.52
  5. Step 5: Solve for x
    x = 11,956,435,328.52/112,938.40
  6. Step 6: Final answer
    x = 105,866.87

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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.