Home / 112,808.09-155,658.35-69,830.81

Finding the Fourth Proportional to 112,808.09, 155,658.35 and 69,830.81

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Solution

The fourth proportional to 112,808.09, 155,658.35 and 69,830.81 is: 96,356.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,808.09 : 155,658.35 = 69,830.81 : x
  2. Step 2: Convert to fraction form
    112,808.09/155,658.35 = 69,830.81/x
  3. Step 3: Cross multiply
    112,808.09x = 155,658.35 × 69,830.81
  4. Step 4: Simplify right side
    112,808.09x = 10,869,748,314.61
  5. Step 5: Solve for x
    x = 10,869,748,314.61/112,808.09
  6. Step 6: Final answer
    x = 96,356.11

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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.