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Finding the Fourth Proportional to 112,417.80, 155,136.96 and 61,430.53

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Solution

The fourth proportional to 112,417.80, 155,136.96 and 61,430.53 is: 84,774.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,417.80 : 155,136.96 = 61,430.53 : x
  2. Step 2: Convert to fraction form
    112,417.80/155,136.96 = 61,430.53/x
  3. Step 3: Cross multiply
    112,417.80x = 155,136.96 × 61,430.53
  4. Step 4: Simplify right side
    112,417.80x = 9,530,144,899.70
  5. Step 5: Solve for x
    x = 9,530,144,899.70/112,417.80
  6. Step 6: Final answer
    x = 84,774.34

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.