Home / 124,877.40-187,316.10-72,389.40

Finding the Fourth Proportional to 124,877.40, 187,316.10 and 72,389.40

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Solution

The fourth proportional to 124,877.40, 187,316.10 and 72,389.40 is: 108,584.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,877.40 : 187,316.10 = 72,389.40 : x
  2. Step 2: Convert to fraction form
    124,877.40/187,316.10 = 72,389.40/x
  3. Step 3: Cross multiply
    124,877.40x = 187,316.10 × 72,389.40
  4. Step 4: Simplify right side
    124,877.40x = 13,559,700,089.34
  5. Step 5: Solve for x
    x = 13,559,700,089.34/124,877.40
  6. Step 6: Final answer
    x = 108,584.10

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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.