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Finding the Fourth Proportional to 118,415.16, 163,345.14 and 75,925.80

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Solution

The fourth proportional to 118,415.16, 163,345.14 and 75,925.80 is: 104,734.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,415.16 : 163,345.14 = 75,925.80 : x
  2. Step 2: Convert to fraction form
    118,415.16/163,345.14 = 75,925.80/x
  3. Step 3: Cross multiply
    118,415.16x = 163,345.14 × 75,925.80
  4. Step 4: Simplify right side
    118,415.16x = 12,402,110,430.61
  5. Step 5: Solve for x
    x = 12,402,110,430.61/118,415.16
  6. Step 6: Final answer
    x = 104,734.14

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1.5x scale

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.