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Finding the Fourth Proportional to 142,411.61, 213,430.55 and 104,795.55

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Solution

The fourth proportional to 142,411.61, 213,430.55 and 104,795.55 is: 157,055.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,411.61 : 213,430.55 = 104,795.55 : x
  2. Step 2: Convert to fraction form
    142,411.61/213,430.55 = 104,795.55/x
  3. Step 3: Cross multiply
    142,411.61x = 213,430.55 × 104,795.55
  4. Step 4: Simplify right side
    142,411.61x = 22,366,571,350.07
  5. Step 5: Solve for x
    x = 22,366,571,350.07/142,411.61
  6. Step 6: Final answer
    x = 157,055.81

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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.