Home / 187,613.16-258,931.17-111,126.21

Finding the Fourth Proportional to 187,613.16, 258,931.17 and 111,126.21

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Solution

The fourth proportional to 187,613.16, 258,931.17 and 111,126.21 is: 153,368.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,613.16 : 258,931.17 = 111,126.21 : x
  2. Step 2: Convert to fraction form
    187,613.16/258,931.17 = 111,126.21/x
  3. Step 3: Cross multiply
    187,613.16x = 258,931.17 × 111,126.21
  4. Step 4: Simplify right side
    187,613.16x = 28,774,039,572.97
  5. Step 5: Solve for x
    x = 28,774,039,572.97/187,613.16
  6. Step 6: Final answer
    x = 153,368.98

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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.