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Finding the Fourth Proportional to 127,117.95, 190,557.54 and 42,819.12

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Solution

The fourth proportional to 127,117.95, 190,557.54 and 42,819.12 is: 64,188.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,117.95 : 190,557.54 = 42,819.12 : x
  2. Step 2: Convert to fraction form
    127,117.95/190,557.54 = 42,819.12/x
  3. Step 3: Cross multiply
    127,117.95x = 190,557.54 × 42,819.12
  4. Step 4: Simplify right side
    127,117.95x = 8,159,506,172.16
  5. Step 5: Solve for x
    x = 8,159,506,172.16/127,117.95
  6. Step 6: Final answer
    x = 64,188.47

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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.