Home / 127,484.12-191,160.90-74,909.40

Finding the Fourth Proportional to 127,484.12, 191,160.90 and 74,909.40

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Solution

The fourth proportional to 127,484.12, 191,160.90 and 74,909.40 is: 112,325.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,484.12 : 191,160.90 = 74,909.40 : x
  2. Step 2: Convert to fraction form
    127,484.12/191,160.90 = 74,909.40/x
  3. Step 3: Cross multiply
    127,484.12x = 191,160.90 × 74,909.40
  4. Step 4: Simplify right side
    127,484.12x = 14,319,748,322.46
  5. Step 5: Solve for x
    x = 14,319,748,322.46/127,484.12
  6. Step 6: Final answer
    x = 112,325.74

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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.