Home / 112,424.40-155,140.80-61,436.34

Finding the Fourth Proportional to 112,424.40, 155,140.80 and 61,436.34

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Solution

The fourth proportional to 112,424.40, 155,140.80 and 61,436.34 is: 84,779.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,424.40 : 155,140.80 = 61,436.34 : x
  2. Step 2: Convert to fraction form
    112,424.40/155,140.80 = 61,436.34/x
  3. Step 3: Cross multiply
    112,424.40x = 155,140.80 × 61,436.34
  4. Step 4: Simplify right side
    112,424.40x = 9,531,282,936.67
  5. Step 5: Solve for x
    x = 9,531,282,936.67/112,424.40
  6. Step 6: Final answer
    x = 84,779.49

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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.