Home / 103,407.10-155,110.65-28,538.80

Finding the Fourth Proportional to 103,407.10, 155,110.65 and 28,538.80

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Solution

The fourth proportional to 103,407.10, 155,110.65 and 28,538.80 is: 42,808.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,407.10 : 155,110.65 = 28,538.80 : x
  2. Step 2: Convert to fraction form
    103,407.10/155,110.65 = 28,538.80/x
  3. Step 3: Cross multiply
    103,407.10x = 155,110.65 × 28,538.80
  4. Step 4: Simplify right side
    103,407.10x = 4,426,671,818.22
  5. Step 5: Solve for x
    x = 4,426,671,818.22/103,407.10
  6. Step 6: Final answer
    x = 42,808.20

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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.