Home / 112,407.12-155,117.03-61,419.05

Finding the Fourth Proportional to 112,407.12, 155,117.03 and 61,419.05

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Solution

The fourth proportional to 112,407.12, 155,117.03 and 61,419.05 is: 84,755.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,407.12 : 155,117.03 = 61,419.05 : x
  2. Step 2: Convert to fraction form
    112,407.12/155,117.03 = 61,419.05/x
  3. Step 3: Cross multiply
    112,407.12x = 155,117.03 × 61,419.05
  4. Step 4: Simplify right side
    112,407.12x = 9,527,139,538.74
  5. Step 5: Solve for x
    x = 9,527,139,538.74/112,407.12
  6. Step 6: Final answer
    x = 84,755.66

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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.