Home / 112,731.96-155,569.80-64,985.04

Finding the Fourth Proportional to 112,731.96, 155,569.80 and 64,985.04

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Solution

The fourth proportional to 112,731.96, 155,569.80 and 64,985.04 is: 89,679.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,731.96 : 155,569.80 = 64,985.04 : x
  2. Step 2: Convert to fraction form
    112,731.96/155,569.80 = 64,985.04/x
  3. Step 3: Cross multiply
    112,731.96x = 155,569.80 × 64,985.04
  4. Step 4: Simplify right side
    112,731.96x = 10,109,709,675.79
  5. Step 5: Solve for x
    x = 10,109,709,675.79/112,731.96
  6. Step 6: Final answer
    x = 89,679.18

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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.