Home / 108,772.61-163,278.11-86,426.93

Finding the Fourth Proportional to 108,772.61, 163,278.11 and 86,426.93

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Solution

The fourth proportional to 108,772.61, 163,278.11 and 86,426.93 is: 129,735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,772.61 : 163,278.11 = 86,426.93 : x
  2. Step 2: Convert to fraction form
    108,772.61/163,278.11 = 86,426.93/x
  3. Step 3: Cross multiply
    108,772.61x = 163,278.11 × 86,426.93
  4. Step 4: Simplify right side
    108,772.61x = 14,111,626,407.76
  5. Step 5: Solve for x
    x = 14,111,626,407.76/108,772.61
  6. Step 6: Final answer
    x = 129,735.11

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1.5x scale

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.