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Finding the Fourth Proportional to 159,703.06, 220,314.18 and 105,312.10

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Solution

The fourth proportional to 159,703.06, 220,314.18 and 105,312.10 is: 145,280.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,703.06 : 220,314.18 = 105,312.10 : x
  2. Step 2: Convert to fraction form
    159,703.06/220,314.18 = 105,312.10/x
  3. Step 3: Cross multiply
    159,703.06x = 220,314.18 × 105,312.10
  4. Step 4: Simplify right side
    159,703.06x = 23,201,748,955.58
  5. Step 5: Solve for x
    x = 23,201,748,955.58/159,703.06
  6. Step 6: Final answer
    x = 145,280.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.