Home / 187,136.16-258,128.40-111,641.76

Finding the Fourth Proportional to 187,136.16, 258,128.40 and 111,641.76

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Solution

The fourth proportional to 187,136.16, 258,128.40 and 111,641.76 is: 153,994.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,136.16 : 258,128.40 = 111,641.76 : x
  2. Step 2: Convert to fraction form
    187,136.16/258,128.40 = 111,641.76/x
  3. Step 3: Cross multiply
    187,136.16x = 258,128.40 × 111,641.76
  4. Step 4: Simplify right side
    187,136.16x = 28,817,908,881.98
  5. Step 5: Solve for x
    x = 28,817,908,881.98/187,136.16
  6. Step 6: Final answer
    x = 153,994.34

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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.