Home / 112,603.57-168,988.28-90,681.53

Finding the Fourth Proportional to 112,603.57, 168,988.28 and 90,681.53

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Solution

The fourth proportional to 112,603.57, 168,988.28 and 90,681.53 is: 136,089.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,603.57 : 168,988.28 = 90,681.53 : x
  2. Step 2: Convert to fraction form
    112,603.57/168,988.28 = 90,681.53/x
  3. Step 3: Cross multiply
    112,603.57x = 168,988.28 × 90,681.53
  4. Step 4: Simplify right side
    112,603.57x = 15,324,114,484.12
  5. Step 5: Solve for x
    x = 15,324,114,484.12/112,603.57
  6. Step 6: Final answer
    x = 136,089.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.